An electric generator converts:

Each one of the following changes will increase e.m.f. (or voltage) in a simple generator except:

The north pole of a long bar magnet was pushed slowly into a short solenoid connected to a galvanometer. The magnet was held stationary for a few seconds with the north pole in the middle of the solenoid and then withdrawn rapidly. The maximum deflection of the galvanometer was observed when the magnet was:

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 :