Question

Electromagnets are made of soft iron because soft iron has:






A)
low retentivity and high coercive force




B)
high retentivity and high coercive force




C)
low retentivity and low coercive force




D)
high retentivity and low coercive force





Kindly explain the answer also.

Answer 1

Electromagnets are made of soft iron because soft iron has high retentivity and low coercive force .

Option (D) is correct.

Explanation:

• Electromagnets are made of soft iron because soft iron has high retentivity and high coercive force .
• The magnetic field is produced in electromagnetic but when the electric filed is dropped to zero, it does not affect the magnetism of the soft iron as it remains the same.
• And a low coercive force is required to demagnetize the soft iron. Hence a small force is required to do so.

Answer 2

Answer:

Right answer..........

D) high retentivity and low coercive force.

Hope it helps you...