Question

Two circular coils A and B are placed close to each other. If the current in coil A is changed, will some current be induced in the coil B? Give reason for your answer.

Answer 1

Yes, a current is induced in the coil B. When the current in the coil A is changed, the magnetic field associated with it also changes. As coil B is placed close to A hence, magnetic field lines around this coil also change. Due to change in magnetic field lines, associated with coil B, an induced current is also induced in it.