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.
Electromagnets are made of soft iron because:
Soft iron has high retentivity- When the magnetising field is reduced to zero, soft iron retains magnetisation.
and Low coercive force-To demagnetise the soft iron, a small force is required .
Soft iron has high retentivity- When the magnetising field is reduced to zero, soft iron retains magnetisation.
and Low coercive force-To demagnetise the soft iron, a small force is required .