Oersted experimental device for student

Abstract

The invention discloses an Oersted's experiment device for students, which comprises batteries, a small magnetic needle, a cell bracket and straight wire. The straight wire passes through circular holes on two metal plates of the cell bracket and is fixed by screws. The small magnetic needle is positioned right under of the straight wire to be parallel with the straight wire. If pinching the metal plates with hand, the students can observe magnetic phenomenon discovered by Oersted. The invention has the advantages of simple structure, convenient operation and no need of regulation, which is not easy to damage electric power and is suitable for being used in student group experiments.

Description

Technical field: [0001] The invention relates to an experimental device, in particular to an Oster experimental device for high school physics teaching. Background technique: [0002] The Oersted experiment is a key experiment for students to understand the magnetic field generated by current. It is very necessary for students to understand the nature of magnetic phenomena by letting each student do this experiment by himself. However, at present, teachers' demonstration experiments are used in domestic teaching, and there is no equipment suitable for students' group experiments, so students cannot conduct experiments by themselves. [0003] The method of existing demonstrative experiment is: at first will connect circuit, then lead wire is bent into "∏" shape, and its straight line part is placed on the appropriate position directly above small magnetic needle again (distance between the two can not be too large, and Can not be too small), require the straight wire to be p...

AI Technical Summary

Problems solved by technology

However, at present, teachers' demonstration experiments are used in domestic teaching, and there is no equipment suitable for students' group experiments, and students cannot conduct experiments by themselves.

[0003] The method of existing demonstrative experiment is: at first will connect circuit, then lead wire is bent into "∏" shape, and its straight line part is placed on the appropriate position directly above small magnetic needle again (distance between the two can not be too large, and Can not be too small), require the straight wire to be parallel to the small magnetic needle, and finally let the wire contact with one pole of the power supply (too long contact time will damage the power supply, and the experimental phenomenon will not be visible if the contact time is too short), and observe the rotation of the small magnetic needle at the same time

It can be seen that the existing experimental operation is complicated, the technical content is high, and the power supply is easily damaged.

Therefore, the existing demonstration experiments are not suitable for group experiments for students

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