The frequency of direct current (d.c.) is:

A d.c. generator is based on the principle of:

An induced current is produced when a magnet is moved into a coil. The magnitude of induced current does not depend on :

The frequency of alternating current (a.c.) supply in India is:

A coil is connected to a galvanometer. When the N-pole of a magnet is pushed into the coil, the galvanometer deflected to the right. What deflection, if any, is observed when:

(a) the N-pole is removed?

(b) the 5-pole is inserted?

(c) the magnet is at rest in the coil?

State three ways of increasing the deflection on the galvanometer.