Question

Name two factors on which the strength of magnetic field of an electromagnet depends and state how does it depend on the factors stated by you.

Answer 1

The strength of the magnetic field of an electromagnet depends on:

1. Number of turns: The strength of the magnet increases with the number of turns of the winding in the solenoid.
2. Current: The strength of the magnetic field increases with increasing current through the solenoid.

Answer 2

Factors on which the strength of the magnetic field of an electromagnet depends are:

1. The number of turns in the solenoid. If the number of turns in the solenoid increases or decreases, the magnetic intensity also increases or decreases.
2. It is directly proportional to the strength of the current that flows in the turns of the solenoid.
3. It is found to increase further if a soft iron piece, called core, is placed along the axis of the solenoid inside it.