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

The magnetic field associated with coil A changes as the current in it changes. As a result, the magnetic field surrounding coil B shifts. The magnetic field of coil B changes, causing current to flow through it.