Physics > 2003 > 35
JAMB UTME
I.It retains its magnetism 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 electro-magnets?
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 electro-magnets?
A.
I and II only
B.
II and III only
C.
I, III and IV only.
D.
II, III and IV only
Answer: B
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