(i) Electromagnets can be made more powerful than ordinary bar magnets. |
(ii) Soft iron is easy to magnetize and |
(iii) The poles of an electromagnet are not affected by the direct on of the current. |
A) Only (i) and (ii)
B) Only (ii) and (iii)
C) Only (i) and (iii)
D) (i), (ii) and (iii)
Correct Answer: A
Solution :
Electromagnets are more powerful than ordinary bar magnets. Soft iron is easy to magnetize and demagnetize. The poles of an electromagnet depend upon the direction of current flowing through a circuit.You need to login to perform this action.
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