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

(N/A) Yes,a current will be induced in coil $B$.
Reason: When the current in coil $A$ is changed,the magnetic field associated with it also changes.
Since coil $B$ is placed close to coil $A$,the magnetic field lines passing through coil $B$ also change.
This change in magnetic flux linked with coil $B$ induces an electric current in it,according to the principle of electromagnetic induction.