Electromagnetic induction demonstration experiment device for physics teaching

Abstract

The present invention belongs to the technical field of physics teaching demonstration experiment devices, and especially relates to an experiment device for demonstration of electromagnetism induction phenomenon in physics teaching. The device comprises a demonstration rack and an electromagnetic induction mechanism arranged on the demonstration rack; the electromagnetic induction mechanism comprises permanent magnets, demonstration channels arranged below the permanent magnets, induction coils winded at the outer surfaces of the demonstration channels and an indication bulb. One ends of thepermanent magnets are movably connected with the demonstration rack, two ends of the induction coils are provided with binding posts, and the indication bulb is connected with the binding posts through wires. Through comparison experiment, the electromagnetic induction demonstration experiment device for physics teaching allows students to clearly understand the Lenz's law, the right hand rule andthe relation of currents and forces so as to effectively improve the students' learning motility, train the students' initiative for problem thinking and problem solution and improve the learning efficiency.

Description

technical field [0001] The invention belongs to the technical field of demonstration experimental equipment for physics teaching, in particular to an experimental device for demonstrating electromagnetic induction phenomena in physics teaching. Background technique [0002] In the chapters of electricity and magnetism in junior high school and high school physics, the syllabus requires students to master the direction of the magnetic field, the direction of the current in the current-carrying conductor, the force direction of the current-carrying conductor in the magnetic field, and the dialectical relationship between the three. When it comes to the concept of direction, it is often not easy for students to grasp it if it is taught only by language or gestures without the help of teaching demonstration instruments. The existing teaching and demonstration instrument uses a hoof-shaped magnet to generate a magnetic field, so that the trajectory of the current conductor moving...

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Problems solved by technology

[0005] However, on the one hand, it needs to manually make the induction coil cut the magnetic induction line, which also takes a lot of time. On the other hand, it only sets one induction coil to cut the magnetic induction line, and there is no control group, which makes it difficult for students to clear and understand the induction coil. The difference between cutting the magnetic induction line and not cutting the magnetic induction line; and, it requires the teacher to cut the magnetic induction coil with the hand, and cannot make the students clearly understand the force of the induction coil when the induction coil cuts the magnetic induction line Happening

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