Question

What does the magnetic field pattern inside the solenoid indicate ? State how this field be utilised to make an electromagnet. List two ways by which strength of this magnet can be increased.

Answer 1

It indicates that the magnetic field is same at all points inside the solenoid.

This property is utilised to magnetise a piece of magnetic material like soft iron when placed inside the coil.

Two ways by which the strength of an electromagnet can be increased :

Increase the amount of electric current through it. Increase the number of turns of the coil.