Question

Q.7) The two factors on which strength of electromagnets depend are
○amount of current and number of turns of the coil
○number of current produced and coils formed
○number of turns of the coil only
○none of these​

Answer 1

Answer:

(A) option

Explanation:

Because amount of current and number of turns of the coil depends for the strength of electromagnet..

Answer 2

Answer:

option a

amount of current and no. of turns of the coil

Explanation:

the strength of electomagnet depends on amount of current because

The more amount of current passed the more the strength of electromagnet becomes.

This because the current increases there is more flow of electrons which in turn increases the magnetic field around it.

The number of turns in the coils, the greater the number of coils, the greater the strength. This is because more the number of coils, more uniformity is obtained in the magnetic field and hence it is more stronger.

hope this helps