Questions
The material suitable for making electromagnets should have
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a
high retentivity and high coercivity
b
low retentivity and low coercivity
c
high retentivity and low coercivity
d
low retentivity and high coercivity
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Correct option is B
Electromagnets are made of soft iron which have low retentivity and low coercivity. so that the substance can be easily magnetised and demagnetised in both directions.Similar Questions
Which of the following is most suitable for the core of electromagnets?
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