Question

The change in the no. of magnetic field lines does not induce an emf in the coil.

• A. Current in coil
• B. Both A and C

Answer 1

The correct option is B

Both A and C

Any change in the magnetic environment of a coil of wire will cause a voltage (emf) to be "induced" in the coil. No matter how the change is produced, the voltage will be generated. The change could be produced by changing the magnetic field strength, moving a magnet toward or away from the coil, moving the coil into or out of the magnetic field etc. So, the given statement is false.