Faraday law of electromagnetic induction experiment device and experiment method thereof

A technology of electromagnetic induction and experimental equipment, applied in the direction of educational appliances, instruments, teaching models, etc., can solve the problems that students are difficult to understand, cannot conduct quantitative analysis, etc., and achieve the effect of improving the effect

Pending Publication Date: 2018-12-18
SUZHOU UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0003] Since the birth of this law, there have been no direct experiments in textbooks to prove this seemingly simple and abstract law. It is difficult for students to understand, and there is no re

Method used

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  • Faraday law of electromagnetic induction experiment device and experiment method thereof
  • Faraday law of electromagnetic induction experiment device and experiment method thereof
  • Faraday law of electromagnetic induction experiment device and experiment method thereof

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Embodiment Construction

[0028] In order to make it easy to understand the technical means, creative features, goals and effects achieved by the present invention, the present invention will be further explained in conjunction with specific embodiments below.

[0029] Such as Figure 1~Figure 4 Shown here is an experimental device for Faraday’s law of electromagnetic induction of the present invention. The experimental device 1 for Faraday’s law of electromagnetic induction includes a variable frequency power supply for teaching 2, a vibrating table 3 for teaching, a strong magnet 5, a square coil 6, and an oscilloscope 4 for teaching. . The teaching variable frequency power supply 2 provides a continuously adjustable AC variable frequency voltage with a frequency of 1HZ-10KHZ and a voltage of 0-25V, which is used to provide power for the teaching vibrating table 3. The teaching vibrating table 3 is a vibration source, with an internal current overload protection device and an external mechanical protect...

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Abstract

The invention discloses a Faraday law of electromagnetic induction experiment device and an experiment method thereof; the experiment device comprises a teaching variable-frequency power source, a teaching vibration table, a strong magnet, a square coil, and a teaching oscilloscope; the experiment method comprises the following steps: the teaching variable-frequency power source selects a proper AC voltage and frequency to provide power for the teaching vibration table; the strong magnet fixed on a teaching vibration table shaft vibrates up and down; the magnetic flux [phi] in the square coilmakes periodical changes, wherein [delta][phi] is decided by the strong magnet amplitude, and [delta]t is decided by a strong magnet vibration frequency (f=1/T); along with vibration amplitude and frequency changes, an induction electromotive force E=n[delta][phi]/[delta]t also changes; the vibration amplitude of the central bright spot in the oscilloscope can be observed, thus determining the induction electromotive force size and direction, and carrying out quantitative analysis via changing the amplitude and frequency. The Faraday law of electromagnetic induction experiment device and method can solve the Faraday law of electromagnetic induction difficulties and doubtful points in physics teaching, thus fully improving the physics teaching effect.

Description

Technical field [0001] The invention relates to a physics teaching experiment device, in particular to an experiment device and an experiment method of Faraday's law of electromagnetic induction. Background technique [0002] In the middle school physics "People's Education Press" elective textbook, the third chapter of electromagnetic induction in Chapter 4, "Faraday's Law of Electromagnetic Induction", describes that the magnetic flux passing through a closed circuit changes, and there is an induced current in the circuit. Since there is induced current in the closed circuit, there must be an electromotive force in the circuit. The electromotive force generated in the electromagnetic induction phenomenon is called induced electromotive force. How is its size defined: With the joint efforts of scientists such as Faraday and Weber, people have concluded that the magnitude of the induced electromotive force in a circuit is proportional to the rate of change of the magnetic flux p...

Claims

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Application Information

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IPC IPC(8): G09B23/18
CPCG09B23/181G09B23/187
Inventor 张承祖房庆安
Owner SUZHOU UNIV OF SCI & TECH
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