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

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 direct current (d.c.) 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.

When the magnet shown in the diagram below is moving towards the coil, the galvanometer gives a reading to the right.

(i) What is the name of the effect being produced by the moving magnet?

(ii) State what happens to the reading shown on the galvanometer when the magnet is moving away from the coil.

(iii) The original experiment is repeated. This time the magnet is moved towards the coil at a great speed.