Gamvdout Optical Plastic Portable Experimental Box Optical Experimental Equipment Small Optical Bench Magnetic Field Demonstrator Physics Electricity Experiment Equipmen

Purpose: Demonstrate the phenomenon that direct current passes through the wire to generate a magnetic field around it, and the relationship between the direction of the magnetic field and the direction of the current. Structure: The current magnetic field demonstrator is composed of three pieces of linear current magnetic field, circular current magnetic field, and solenoid magnetic field demonstrator, all of which use multi-turn coils instead of single-stranded wires to increase the magnetic induction intensity and enhance the demonstration effect. This instrument is made of transparent materials. Avoid surface friction and maintain its transparency. During the demonstration, after the magnetic induction line is formed, the power supply should be cut off to avoid excessive temperature and damage to the instrument. After the experiment, the iron powder should be cleaned with a brush.