Faraday's law of electromagnetic induction is a very important principle. Most of the electrical power in the world is generated by using this principle.
Faraday discovered that when he moved a magnet near a wire a voltage was generated across it. This voltage was termed the induced e.m.f.
Our apparatus provides a simple and an effective method of studying Faraday’s Law.
It consists of a 100 turn coil with 4mm socket connections which slide on a long, 15mm diameter acrylic tube.
The coil can easily slide up and down the acrylic tube and can also be locked in position.
A small cylindrical magnet (supplied) can be dropped down the tube to generate a pulse of electricity as it passes through.
An oscilloscope is used to monitor the resultant induced e.m.f and to measure its amplitude.
At different speeds the amplitude varies and this provides the basis for a student investigation into the relationship between distance fallen by the magnet and the output amplitude.
PC based oscilloscopes are particularly suited to this equipment.