Why only iron is used for making electromagnet; not steel, nickel, cob – McqOptions

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1.	Why only iron is used for making electromagnet; not steel, nickel, cobalt?
A.	Because iron is cheep and easily available
B.	Because iron is a good conductor of electricity
C.	Because when current is switched off in the coil of an electromagnet made of iron, iron loses all its magnetism
D.	Because iron is a temporary magnet
E.	None of these
Answer» D. Because iron is a temporary magnet

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