Magnetic type electromagnetic induction demonstration instrument

Abstract

The invention relates to the technical field of electromagnetic teaching demonstration devices, and in particular, relates to a magnetic type electromagnetic induction demonstration instrument comprising a galvanometer, bottom plate magnets, first binding posts, a flexible wire, a magnetic type shaft, a first acrylic plate, screws, a coil, a second acrylic plate, a strong U-shaped magnet and second binding posts; four bottom plate magnets are arranged at four corners of the back surface of the galvanometer; two first binding posts are arranged on the front surface of the galvanometer; the upper half part of the first acrylic plate is provided with the magnetic type shaft, and the middle part of the first acrylic plate is provided with the two second binding posts respectively; the coil isfixed on the second acrylic plate, and the two screws are respectively arranged at the upper half part of the second acrylic plate; the first binding posts are connected with the second binding poststhrough the flexible wire, and the coil is connected with the second binding posts; and the strong U-shaped magnet is attracted on the blackboard to provide a magnetic field for an experiment. The demonstration instrument is simple and visual in structure and convenient for demonstrating the principle of the electromagnetic induction law.

Description

technical field [0001] The invention relates to the technical field of electromagnetic teaching demonstration devices, in particular to a magnetic suction type electromagnetic induction demonstration device. Background technique [0002] Electromagnetism is a major difficulty in high school physics. To learn electromagnetism well, it is very important to understand the law of electromagnetic induction. Physics is a science based on experiments, and experiments related to it are particularly important for students to understand the law of electromagnetic induction. However, several electromagnetic induction experiments listed in the chapter of electromagnetic induction in the middle school textbook are very simple. Although the effect is obvious, they cannot demonstrate the quantitative relationship between the induced current, the magnetic field, and the speed very well, causing students to struggle in understanding the induced current. It is very difficult to generate cond...

AI Technical Summary

Problems solved by technology

However, several electromagnetic induction experiments listed in the chapter of electromagnetic induction in the middle school textbook are very simple. Although the effect is obvious, they cannot demonstrate the quantitative relationship between the induced current, the magnetic field, and the speed very well, causing students to struggle in understanding the induced current. It is very difficult to generate conditions

[0003] At present, there are many experimental instruments for demonstrating electromagnetic induction phenomena on the market, but there are still some problems with these instruments. Some of these instruments are too large to be easily moved, and it is not easy to demonstrate them in theoretical classrooms; although some have obvious effects, they can only be used on the platform In the demonstration, the students at the back of the classroom are not easy to observe; some can demonstrate the experiment, but they cannot demonstrate the quantitative relationship between the induced current, magnetic flux and time well

Images