Faraday’s Experiment

 Faraday’s Experiment:

Relationship Between Induced EMF and Flux:

In the first experiment, he proved that when the strength of the magnetic field is varied then only the induced current is produced. An ammeter is connected to a loop of wire; the ammeter deflects when a magnet is moved towards the wire.

In the second experiment he proved that when the current is passed through the iron rod, it becomes an electromagnet. He noticed that when there is a relative motion between the magnet and the coil, induced electromagnetic force is produced. When the magnet is rotated about its axis, no electromotive force is observed and if the magnet is rotated about its own axis then the induced electromotive force is produced. Thus, there is no deflection in the ammeter when the magnet is held stationary.

In the third experiment, he noticed that galvanometer does not show any deflection and no induced current is produced in the coil when the coil is moved in a stationary magnetic field. The ammeter deflects in the opposite direction when the magnet is moved away from the loop.