I It retains its magnetic much longer than steel.
II It is more easily magnetized than steel
III It is more easily demagnetized than steel
IV It produces a stronger magnet than steel
Which combination of the above makes iron preferable to steel in the making of electromagnets?
a
I and II only
b
II and III only
c
I, III, and IV only
d
II, III and IV only
Explanation
Correct Option
dVideo Explanation
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Discussions (13)

Chase123
10 years ago
D is d correct answer because it produces stronger magnet that steel but steel retain it's magnet longer than iron

abdulsalam.saliu
4 years ago
D is the correct answer because it produces stronger magnet that steel but steel retain it's magnet longer than iron

martha oyaghire
12 years ago
the answer is option D because iron is also a stronger magnet than and it is easily magnetised and demagnetised




