Faraday electromagnetic experiment device

Abstract

The utility model relates to the technical field of physical experiment equipment, and provides a Faraday electromagnetic experiment device, which comprises a base, and a magnetic field generation module, a magnetic field cutting module, a function demonstration board, an adjustable power supply and a mounting bracket which are arranged on the base, are integrated into an integrated structure and are easy to store and carry. The multifunctional characteristic is achieved, the angle between the magnetic field and the guide rail plane, the guide rail distance and the cutting speed can be automatically adjusted, and simple quantitative operation can be conducted; the demonstration board is arranged for qualitative demonstration and simple quantitative calculation, the operation is simple, the visualization degree of the embodiment is high, the demonstration effect is obvious, students can be well assisted in understanding teaching materials, that is, the factors influencing the induced electromotive force generated when the conductor cuts the magnetic induction line are visually observed, and the students are helped to perform quantitative analysis.

Description

TECHNICAL FIELD

[0001] The utility model relates to physical experiment equipment technical field especially relates to a faraday electromagnetic experiment device. BACKGROUND

[0002] In the physics teaching of high school, the phenomenon and law of electromagnetic induction are the key content of teaching and also the difficulty of teaching. The students only stay in the theoretical level of the book on the experimental phenomenon and law of electromagnetic induction, and the experimental operation is more strange, the students only rely on imagination to understand these phenomena and law, which only leads to not deep impression and difficult to understand, and can only use experimental qualitative, semi-quantitative, and can not fully verify the proportionality relationship between induced electromotive force E and related physical quantities, so the related instrument and equipment are needed to show the faraday electromagnetic induction law.

[0003] And the existing faraday electromagnetic experiment demonstration device is more complex, and various variables such as the strength of the magnetic field, the movement speed and direction of the conductor cannot be accurately controlled, so the relationship between the induced electromotive force and the magnetic induction intensity, the distance between the guide rails and the cutting speed in the closed circuit cannot be intuitively and clearly displayed. UTILITY MODEL CONTENT

[0004] The utility model provides a faraday electromagnetic experiment device, solves the technical problem that the existing faraday electromagnetic experiment demonstration device structure is more complex, the experiment visibility is poor, and the relationship between the variable and the induced electromotive force cannot be intuitively displayed.

[0005] In order to solve the above technical problems, the utility model provides a faraday electromagnetic experiment device, including the base, still includes the magnetic field generation module, the magnetic field cutting module, the function demonstration board, the adjustable power supply and the mounting support installed on the base, the magnetic field generation module rotation is installed on the mounting support;The middle part of the magnetic field cutting module passes through the magnetic field generation module horizontally, and both ends are arranged on both sides of the mounting support;The function demonstration board is arranged on the rear side of the magnetic field generation module;One end of the magnetic field cutting module is electrically connected with the adjustable power supply, and the other end is electrically connected with the function demonstration board;

[0006] The magnetic field and the included angle of the magnetic field cutting module are adjusted by rotating the magnetic field generation module on the mounting support;The magnetic field cutting module does reciprocating motion in the magnetic field inside the magnetic field generation module, and the electromotive force is transmitted to the function demonstration board for display.

[0007] The base scheme integrally installs the magnetic field generating module, the magnetic field cutting module, the function demonstration board, the adjustable power supply and the mounting bracket on the base, and has an integrated structure, is easy to store and carry, qualitative demonstration is performed by setting the demonstration board, simple quantitative calculation can be performed, the operation is simple, the embodiment has high visualization degree, the demonstration effect is obvious, and the students can well understand the teaching material, that is, the students can directly and visually observe the factors affecting the induced electromotive force generated by the conductor cutting the magnetic induction lines, and help the students to quantitatively analyze.

[0008] In a further embodiment, the magnetic field generating module comprises a rotating cylinder, a first partition plate, a second partition plate, a first magnet and a second magnet; the rotating cylinder is hollow inside to form a cavity, and the first partition plate and the second partition plate are symmetrically installed in the cavity; the first partition plate and the second partition plate sequentially divide the cavity of the rotating cylinder into a first installation cavity, a cutting cavity and a second installation cavity, and the first magnet and the second magnet are respectively installed in the first installation cavity and the second installation cavity.

[0009] The rotating cylinder is a transparent cylinder.

[0010] In one aspect, the first partition plate and the second partition plate are directly arranged in the rotating cylinder to sequentially divide the cavity of the rotating cylinder into the first installation cavity, the cutting cavity and the second installation cavity, so that the first magnet and the second magnet are arranged in the first installation cavity and the second installation cavity to form a magnetic field, and the angle between the magnetic field and the plane of the guide rail is self-adjusted, so that the structure is simple and the cost is low; in another aspect, the transparent cylinder is arranged to visualize the cutting operation, so that the user can directly and clearly observe the running condition and the demonstration effect of the experimental device.

[0011] In a further embodiment, the mounting bracket comprises a mounting wall and a support seat; the mounting wall is vertically arranged on the base, and a horizontal through-hole circular hole is arranged in the middle of the mounting wall; an angle scale is arranged around the circular hole on the side of the mounting wall close to the magnetic field generating module; the top of the support seat is recessed downward to be embedded with the magnetic field generating module; one end of the magnetic field generating module is rotatably installed on the mounting wall, and the other end is arranged on the support seat.

[0012] The mounting wall and the support seat are arranged to cooperate with the rotating cylinder, the through-hole circular hole is arranged on the mounting wall to assist the free rotation of the rotating cylinder, and the angle scale is arranged around the circular hole on the side of the mounting wall close to the magnetic field generating module to assist the user to directly and visually understand the rotation amplitude of the magnetic field.

[0013] In a further embodiment, the magnetic field cutting module comprises a sliding guide rail, and a cutting assembly slidingly mounted on the sliding guide rail; the cutting assembly comprises a base, a constant-speed reciprocating rotating motor and a cutting copper rod; the base is arranged at the end of the magnetic field generating module, and the constant-speed reciprocating rotating motor is mounted on the base; the telescopic rod of the constant-speed reciprocating rotating motor penetrates into the inner magnetic field of the magnetic field generating module, and the mounting clamp is arranged at the end of the telescopic rod; the cutting copper rod is transversely mounted on the mounting clamp, and the two ends of the cutting copper rod are tightly connected with the sliding guide rail.

[0014] The constant-speed reciprocating rotating motor is started to drive the cutting copper rod to reciprocate along the sliding guide rail to cut the magnetic field.

[0015] The constant-speed reciprocating rotating motor is started to drive the cutting copper rod to reciprocate along the sliding guide rail to cut the magnetic field.

[0016] In a further embodiment, the sliding guide rail comprises a first side plate, a second side plate, a sliding support and a conductive rod.

[0017] The first side plate and the second side plate are arranged opposite to each other at the two ends of the magnetic field generating module, and the sliding support is arranged on the first side plate and the second side plate towards the magnetic field generating module; two groups of the conductive rods are parallelly mounted on the sliding support; and the cutting copper rod reciprocates on the copper guide rail plane formed by the two groups of the conductive rods.

[0018] In a further embodiment, the sliding support comprises two groups of fixed rods parallel to each other, and a sliding block with holes slidingly mounted on the conductive rod; the two ends of the sliding block with holes are provided with through holes and are respectively sleeved on the two groups of fixed rods, and the middle part of the sliding block with holes is provided with a mounting position for mounting the conductive rod; and the sliding block with holes and the conductive rod are one-to-one corresponding.

[0019] The two groups of sliding blocks with holes are moved to drive the two groups of conductive rods to move close to or away from each other, so as to adjust the distance between the sliding guide rails.

[0020] The conductive rod is mounted on the sliding block with holes, and the sliding freedom degree of the sliding block with holes on the fixed rod is utilized to realize self-defined control of the distance between the conductive rods, and further realize self-defined adjustment of the distance between the guide rails.

[0021] In a further embodiment, the function demonstration board comprises a fixing frame, and a demonstration circuit mounted on the fixing frame, the demonstration circuit comprising a single-pole double-throw switch, an amplifier, a first diode, a second diode and a multimeter; the single-pole double-throw switch is electrically connected with a group of the conductive rods of the sliding guide rail, a first end is connected with one end of the multimeter, a second end is connected with one end of the amplifier, a positive electrode of the first diode and a negative electrode of the second diode, and the other end of the multimeter, the other end of the amplifier, a negative electrode of the first diode and a positive electrode of the second diode are electrically connected with another group of the conductive rods of the sliding guide rail.

[0022] The demonstration circuit is exposed, so that the user can clearly observe the running condition and demonstration effect of the experimental device.

[0023] In a further embodiment, the fixing frame comprises a first fixing plate and a second fixing plate, the first fixing plate is vertically mounted on the base, and the second fixing plate is movably mounted on the top of the first fixing plate by a bolt, and the demonstration circuit is arranged on the second fixing plate.

[0024] The first fixing plate and the second fixing plate are arranged to form a folding fixing frame, so that the device has good storage performance and is easy to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a perspective view of a Faraday electromagnetic experiment device according to an embodiment of the present application;

[0026] Figure 2 is a partial structure assembly diagram of the Faraday electromagnetic experiment device according to an embodiment of the present application; Figure 1

[0027] Figure 3 is an enlarged view of A part of the Faraday electromagnetic experiment device according to an embodiment of the present application; Figure 2

[0028] Figure 4 is a front view of the Faraday electromagnetic experiment device according to an embodiment of the present application; Figure 1

[0029] Figure 5 is a partial structure diagram of a magnetic field generating module of the Faraday electromagnetic experiment device according to an embodiment of the present application; Figure 1

[0030] Figure 6 is a top view of the partial structure according to an embodiment of the present application;

[0031] Figure 7 is a perspective view of a constant-speed reciprocating rotation motor according to an embodiment of the present application;

[0032] Figure 8 ​​​​The utility model embodiment provides an experimental test record table.

[0033] Among them: pedestal 1, magnetic field generating module 2, rotating cylinder 21, first baffle 22, second baffle 23, first magnet 24, second magnet 25, magnetic field cutting module 3, base 31, constant speed reciprocating rotating motor 32, cutting copper bar 33, mounting clamp 34, first side plate 35, second side plate 36, sliding support 37, conducting rod 38, function demonstration board 4, single-pole double-throw switch 41, amplifier 42, first diode 43, second diode 44, multimeter 45, first fixed plate 46, second fixed plate 47, bolt 48, adjustable power supply 5, mounting bracket 6, mounting wall 61, support seat 62,

[0034] Circular through hole a, angle ruler b,

[0035] Fixed rod c, hole sliding block d. DETAILED DESCRIPTION

[0036] The embodiments are given only for the purpose of illustration and can not be understood as limiting the utility model, including the drawings are only for reference and illustration, and do not constitute the limitation of the utility model patent protection range, because many changes can be made to the utility model without departing from the spirit and scope of the utility model.

[0037] The utility model embodiment provides a kind of Faraday electromagnetic experiment device, as shown in Figures 1 to 8 In the embodiment, including pedestal 1, still include magnetic field generating module 2, magnetic field cutting module 3, function demonstration board 4, adjustable power supply 5 and mounting bracket 6 installed on the pedestal 1, the magnetic field generating module 2 is rotationally installed on the mounting bracket 6;The magnetic field cutting module 3 middle part passes through the magnetic field generating module, both ends are separately arranged on the both sides of the mounting bracket 6;The function demonstration board 4 is set to the rear side of the magnetic field generating module 2;The magnetic field cutting module 3 one end is electrically connected with the adjustable power supply 5, and the other end is electrically connected with the function demonstration board 4;

[0038] The magnetic field generating module 2 on the mounting bracket 6 is rotated, the included angle of magnetic field and the magnetic field cutting module 3 is adjusted;The magnetic field cutting module 3 reciprocating motion in the magnetic field of the inside of the magnetic field generating module 2, and electromotive force is transmitted to the function demonstration board 4 and is displayed.

[0039] In the embodiment, refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5The magnetic field generating module 2 comprises a rotating cylinder 21, a first partition 22, a second partition 23, a first magnet 24 and a second magnet 25; the rotating cylinder 21 is hollow inside to form a cavity, and the first partition 22 and the second partition 23 are symmetrically installed on the cavity; the first partition 22 and the second partition 23 sequentially divide the cavity of the rotating cylinder 21 into a first installation cavity, a cutting cavity and a second installation cavity, and the first magnet 24 and the second magnet 25 are respectively installed in the first installation cavity and the second installation cavity.

[0040] The rotating cylinder 21 is a transparent cylinder.

[0041] Preferably, the first partition 22 and the second partition 23 are also made of transparent material.

[0042] In one aspect, the first partition 22 and the second partition 23 are directly arranged in the rotating cylinder 21 to sequentially divide the cavity of the rotating cylinder 21 into the first installation cavity, the cutting cavity and the second installation cavity, so as to install the first magnet 24 and the second magnet 25 in echelon to form a magnetic field, thereby realizing self-adjustment of the angle between the magnetic field and the rail plane, and the structure is simple and the cost is low. On the other hand, the transparent cylinder makes the cutting operation visualized, so as to facilitate the user to intuitively and clearly observe the running condition and demonstration effect of the experimental device.

[0043] In the embodiment, the mounting bracket 6 comprises a mounting wall 61 and a support seat 62; the mounting wall 61 is vertically arranged on the base 1, and a horizontal through-hole a is arranged in the middle of the mounting wall 61; an angle ruler b is arranged around the through-hole a on the side of the mounting wall 61 close to the magnetic field generating module 2; the top of the support seat 62 is concave downward and is embedded with the magnetic field generating module 2; one end of the magnetic field generating module 2 is rotatably mounted on the mounting wall 61, and the other end is arranged on the support seat 62.

[0044] The mounting wall 61 and the support seat 62 are arranged to cooperate with the rotating cylinder 21; the through-hole a is arranged on the mounting wall 61 to assist the free rotation of the rotating cylinder 21, so that the rotating cylinder 21 can be rotated by hand; and the angle ruler b is arranged around the through-hole a on the side of the mounting wall 61 close to the magnetic field generating module 2 to assist the user to intuitively understand the rotation amplitude of the magnetic field.

[0045] In the embodiment, the magnetic field cutting module 3 comprises a sliding guide rail and a cutting assembly slidingly installed on the sliding guide rail; the cutting assembly comprises a base 31, a constant-speed reciprocating rotating motor 32 and a cutting copper rod 33; the base 31 is arranged at the end of the magnetic field generating module 2, and the constant-speed reciprocating rotating motor 32 is installed on the base 31; the telescopic rod of the constant-speed reciprocating rotating motor 32 penetrates into the inner magnetic field of the magnetic field generating module 2, and the telescopic rod is provided with a mounting clamp 34 at the end; the cutting copper rod 33 is transversely installed on the mounting clamp 34, and the two ends are tightly connected with the sliding guide rail.

[0046] The constant-speed reciprocating rotating motor 32 is started to drive the cutting copper rod 33 to reciprocate along the sliding guide rail to cut the magnetic field.

[0047] The two interfaces of the constant-speed reciprocating rotating motor 32 are connected with a 3-24V adjustable power supply 5, the radius of rotation and the length of the connecting rod are required to be equal or approximate as much as possible, and a fisheye bearing with a copper rod is installed at the tail of the telescopic rod, which is a conventional technical means in the art, and will not be described in detail in the embodiment.

[0048] In the embodiment, the constant-speed reciprocating rotating motor 32 drives the constant-speed reciprocating rotating motor 32 to reciprocate along the sliding guide rail to cut the magnetic field, so that the cutting speed can be adjusted.

[0049] In the embodiment, the sliding guide rail comprises a first side plate 35, a second side plate 36, a sliding support 37 and a conductive rod 38.

[0050] The first side plate 35 and the second side plate 36 are arranged at the two ends of the magnetic field generating module 2, the sliding support 37 is arranged on the first side plate 35 and the second side plate 36 towards the magnetic field generating module 2, two groups of the conductive rod 38 are installed on the sliding support 37, and the cutting copper rod 33 reciprocates on the copper rail plane formed by the two groups of the conductive rod 38. Wherein, the cutting copper rod 33 can be in close contact with the copper rail plane at any time.

[0051] The middle part of the second side plate 36 is hollow to form a window for avoiding the cutting assembly (i.e. the telescopic rod, the cutting copper rod 33 and the mounting clamp 34), and the sliding support 37 is horizontally installed on the inner side wall of the window; the window corresponds to the circular through hole a on the mounting wall 61.

[0052] In the embodiment, the sliding support 37 comprises two groups of fixed rods c parallel to each other and a hole sliding block d slidingly installed on the conductive rod 38; the two ends of the hole sliding block d are provided with through holes and are respectively sleeved with two groups of the fixed rods c, and the middle part is provided with a mounting position for mounting the conductive rod 38; the hole sliding block d corresponds to the conductive rod 38 one by one.

[0053] Moving the two groups of the hole sliding block d drives the two groups of the conductive rod 38 to approach or move away from each other, and adjusts the sliding guide rail spacing.

[0054] Preferably, the conductive rod 38 is made of copper.

[0055] In this embodiment, the conductive rod 38 is installed on the hole sliding block d, and the self-defined control of the spacing between the conductive rods 38 is realized by using the sliding degree of freedom of the hole sliding block d on the fixed rod c, and then the self-defined adjustment of the guide rail spacing is realized.

[0056] In this embodiment, referring to Figure 1 , the function demonstration board 4 includes a fixed frame and a demonstration circuit installed on the fixed frame, the demonstration circuit includes a single-pole double-throw switch 41, an amplifier 42, a first diode 43, a second diode 44, and a multimeter 45; the single-pole double-throw switch 41 is electrically connected with a group of the conductive rod 38 of the sliding guide rail, the first end is connected with one end of the multimeter 45, the second end is connected with one end of the amplifier 42, the positive electrode of the first diode 43, and the negative electrode of the second diode 44, the other end of the multimeter 45, the other end of the amplifier 42, the negative electrode of the first diode 43, and the positive electrode of the second diode 44 are electrically connected with another group of the conductive rod 38 of the sliding guide rail.

[0057] Preferably, the first diode 43 and the second diode 44 are connected in parallel, and the first diode 43 and the second diode 44 are both light-emitting diodes; the induced electromotive force generated by the conductor cutting magnetic induction is connected as a small signal into the amplifier 42; the multimeter 45 selects the millivolt range, and the red meter pen is connected with the first end (for example, the right terminal) of the single-pole double-throw switch 41, and the black meter pen is connected with the other end of the amplifier 42.

[0058] In this embodiment, the exposed demonstration circuit is provided, so that the user can clearly observe the running condition and demonstration effect of the experimental device.

[0059] In this embodiment, the fixed frame includes a first fixed plate 46 and a second fixed plate 47, the first fixed plate 46 is vertically installed on the base 1, and the second fixed plate 47 is movably installed on the top of the first fixed plate 46 through a pin 48, and the demonstration circuit is arranged on the second fixed plate 47.

[0060] When the device is idle, the second fixed plate 47 can be disassembled by pulling out the pin 48.

[0061] Preferably, a writable white paper can be covered on the second fixed plate 47 to highlight the demonstration circuit according to the needs.

[0062] In this embodiment, the first fixed plate 46 and the second fixed plate 47 are arranged to form a folding type fixed frame, and the device has good storage performance and simple assembly.

[0063] The experimental process of the device is as follows:

[0064] 1、Before the experiment, make sure that the copper rod 33 can be cut with the conductive rod 38 (copper rail plane), the control switch on the function demonstration board 4 is in the off state, the adjustable power supply 5 is connected with the rotating motor, the amplifier 42 is connected with the 12V power supply, and the magnetic field is perpendicular to the rail plane.

[0065] 2、The rail plane is connected to the circuit, the single-pole double-throw switch 41 is closed to the left, the adjustable power supply 5 is gradually increased, and the brightness change of the light-emitting diode is observed.

[0066] 3、Fix the adjustable power supply 5 at a certain voltage value, slowly rotate the magnetic field from perpendicular to the rail plane to parallel to the rail plane, and observe the bright and dark changes of the light-emitting diode. After observation, turn off the adjustable power supply 5, disconnect the amplifier 42 power supply, and disconnect the switch.

[0067] 4、Close the single-pole double-throw switch 41 to the right, adjust the millivolt voltage range (mV) of the multimeter, adjust the adjustable voltage from 6V, change 2V each time, rotate the magnetic field to 30°, 45° and 60° with the rail plane, and observe the voltage display change and record.

[0068] 5、The magnetic field is perpendicular to the rail plane, the rail plane is connected to the multimeter, the adjustable power supply 5 is adjusted from 10V to 20V, the change amplitude is 2V each time, the magnetic induction intensity B is measured by using the gauss meter, the maximum cutting speed V on the reference table is checked, the voltage display is observed and recorded, and reference is made to Figure 8 .

[0069] The utility model discloses a magnetic field generation module 2, magnetic field cutting module 3, function demonstration board 4, adjustable power supply 5 and installation support 6 are installed on base 1, have the following advantages:

[0070] (1) integrated structure, easy to store and carry: only need to open the power switch during the experiment to observe the phenomenon, and a series of cumbersome connection operations before the experiment are avoided;

[0071] (2) multi-functional operation: the embodiment can adjust the angle of the magnetic field and the rail plane, the distance between the rails and the cutting speed, and simple quantitative operation can be carried out;

[0072] (3) high safety: the electromotive force generated by the embodiment is about 1mv, which can be adjusted by adjusting the power knob, and the safety is very high.

[0073] (4) Demonstrative: setting demonstration board for qualitative demonstration, and can also carry out simple quantitative calculation, simple operation, high visualization degree of embodiment, obvious demonstration effect, which can help students understand the teaching material, that is, directly observing the factors affecting the induced electromotive force generated by the cutting of the magnetic induction lines of the conductor, helping students to quantitatively analyze.

[0074] The above embodiment is a preferred embodiment of the present application, but the embodiment of the present application is not limited by the above embodiment, and any change, modification, replacement, combination, simplification made without departing from the spirit and principle of the present application should be an equivalent replacement method, which is included in the protection scope of the present application.

Claims

1. A Faraday electromagnetic experiment apparatus comprising a base, characterised in that: It also includes a magnetic field generating module, a magnetic field cutting module, a function demonstration board, an adjustable power supply and a mounting bracket installed on the base, the magnetic field generating module is rotatably installed on the mounting bracket, the magnetic field cutting module is horizontally passed through the middle of the magnetic field generating module, and the two ends are separately arranged on the two sides of the mounting bracket; The function demonstration board is arranged on the rear side of the magnetic field generating module; one end of the magnetic field cutting module is electrically connected with the adjustable power supply, and the other end is electrically connected with the function demonstration board; Rotating the magnetic field generating module on the mounting bracket, the included angle of the magnetic field and the magnetic field cutting module is adjusted; The magnetic field cutting module reciprocates in the magnetic field inside the magnetic field generating module to generate electromotive force and transmits to the function demonstration board for display.

2. A Faraday's electromagnetic experiment apparatus as claimed in claim 1, wherein: The magnetic field generating module includes a rotating cylinder, a first partition, a second partition, a first magnet and a second magnet; the rotating cylinder is hollow inside to form a cavity, the first partition and the second partition are symmetrically installed on the cavity; the first partition and the second partition sequentially divide the cavity of the rotating cylinder into a first installation cavity, a cutting cavity and a second installation cavity, and the first magnet and the second magnet are respectively installed in the first installation cavity and the second installation cavity; The rotating cylinder is a transparent cylinder.

3. A Faraday's electromagnetic experiment apparatus as claimed in claim 2, wherein: The mounting bracket includes a mounting wall and a support seat; the mounting wall is vertically arranged on the base, and a horizontal through-hole circular hole is arranged in the middle of the mounting wall; an angle ruler is arranged around the circular hole on the side of the mounting wall close to the magnetic field generating module; the top of the support seat is concave downward and embedded with the magnetic field generating module; one end of the magnetic field generating module is rotatably installed on the mounting wall, and the other end is arranged on the support seat.

4. A Faraday's electromagnetic experiment apparatus as claimed in claim 1, wherein: The magnetic field cutting module includes a sliding guide rail and a cutting assembly slidably installed on the sliding guide rail; the cutting assembly includes a base, a constant-speed reciprocating rotating motor and a cutting copper rod; the base is arranged at the end of the magnetic field generating module, and the constant-speed reciprocating rotating motor is installed on the base; the telescopic rod of the constant-speed reciprocating rotating motor penetrates into the inside magnetic field of the magnetic field generating module, and the end of the telescopic rod is provided with a mounting clamp; the cutting copper rod is transversely installed on the mounting clamp, and the two ends are tightly connected with the sliding guide rail; Starting the constant-speed reciprocating rotating motor drives the cutting copper rod to reciprocate along the sliding guide rail to cut the magnetic field.

5. A Faraday electromagnetic experiment apparatus as claimed in claim 4, characterized in that: The sliding guide rail includes a first side plate, a second side plate, a sliding support and a conductive rod; The first side plate and the second side plate are oppositely arranged at the two ends of the magnetic field generating module, and the sliding supports are arranged on the first side plate and the second side plate towards the magnetic field generating module; two groups of the conductive rods are installed on the sliding supports in parallel, and the cutting copper rod reciprocates on the copper guide rail plane formed by the two groups of the conductive rods.

6. A Faraday's electromagnetic experiment apparatus as claimed in claim 5, wherein: The sliding support includes two groups of fixed rods in parallel and a hole sliding block slidably installed on the conductive rod; the two ends of the hole sliding block are provided with through holes and are respectively sleeved on the two groups of fixed rods, and the middle part is provided with a mounting position for mounting the conductive rod; the hole sliding block corresponds to the conductive rod one by one. The two groups of the sliding guide are driven to move close to or away from each other by moving the two groups of the sliding block with holes and the two groups of the conductive rods.

7. A Faraday's electromagnetic experiment apparatus as claimed in claim 6, wherein: The function demonstration board comprises a fixed frame and a demonstration circuit installed on the fixed frame, the demonstration circuit comprises a single-pole double-throw switch, an amplifier, a first diode, a second diode and a multimeter; the single-pole double-throw switch is electrically connected with one group of the conductive rods of the sliding guide, a first end is connected with one end of the multimeter, a second end is connected with one end of the amplifier, a positive electrode of the first diode and a negative electrode of the second diode, and the other end of the multimeter, the other end of the amplifier, a negative electrode of the first diode and a positive electrode of the second diode are electrically connected with the other group of the conductive rods of the sliding guide.

8. A Faraday's electromagnetic experiment apparatus as claimed in claim 7, wherein: The fixed frame comprises a first fixed plate and a second fixed plate, the first fixed plate is vertically installed on a base, a top of the first fixed plate is movably installed with the second fixed plate through a bolt, and the demonstration circuit is arranged on the second fixed plate.

Images