Faraday's law of Electromagnetic Induction states that:
"The Magnitude of the induced e.m.f is directly proportional to the rate of change of magnetic flux experienced by the conductor".
When a bar magnetic moves in a solenoid (coiled wires),there is a change in the magnetic flux linkage through the coil. An induced e.m.f is produced in the coil. The magnitude of the e.m.f increases when:
-the relative motion between the magnet and the coil is increased.
-the number of turns on the coil is increased.
-the cross sectional area of the coil is increased.
The direction of the induced current can be determined by using the Lenz's Law.
2 comments:
Lenz's law states dat an induced e.m.f always gives rise to a current whose magnetic field opposes the original change in the magnetic flux
Appreciatte this blog post
Post a Comment