- When a magnet is moved into and out of the solenoid, magnetic flux is being cut by the coil.
- The cutting of magnetic flux by the wire coil induces an e.m.f in the wire.
- When the solenoid is connected to a closed circuit, the induced current will flow through the circuit.
- The production of electric current by changing the magnetic field is called electromagnetic induction.
- Current/emf is induced only when there is relative motion between the magnetic field and the conductor.
- The direction of the induced current and the magnitude of the induced e.m.f due to the cutting of the magnetic flux can be determined from Lenz’s Law and Faraday’s Law.