Feature:
1. Lightweight and portable, the electromagnetic induction spiral coil specializes in electromagnetic induction phenomena, which is convenient to carry and use.
2. Easy to use, it can be used with bar magnets, ammeters, sliding varistors and other instruments.
3. Physics laboratory equipment auxiliary tools make physics experiment learning more efficient.
4. Rugged and durable, constructed of enameled copper, wear resistant, not easy to be damaged, and long service life.
5. It is designed to demonstrate electromagnetic induction and verify Lenz's law for students. It is an ideal choice for physics teaching.

Specification:

Item Type: Electromagnetic Induction Coil
Material: PVC+Brass
Purpose: Middle and high school physics experiment
Applicable Experiments: Study electromagnetic induction, verify Lenz's law, study magnetic induction phenomenon
The outer diameter of the hole at the bottom of the original coil is: Approx. 40mm / 1.6in
The inner diameter of the hole at the bottom of the original coil is: Approx. 25mm / 1.0in
The height of the round hole at the bottom of the original coil: Approx. 60mm / 2.4in
The diameter of the hole at the bottom of the secondary coil is: Approx. 25mm / 1.0in
The inner diameter of the circular hole at the bottom of the secondary coil is: Approx. 15mm / 0.6in
The height of the round hole at the bottom of the secondary coil: Approx. 80mm / 3.1in
Soft Core Length: Approx. 85mm / 3.3in

How to use:
1. Study the of electromagnetic induction: connect the two ends of the secondary coil B to the two terminals of the ammeter with wires;
When using one end of the bar magnet to quickly insert (or withdraw) the secondary coil, the p