Question

The magnetic polarity at the two ends of a horse-shoe magnet depends on :
(a) the strength of current in the coil
(b) the number of turns in the coil
(c) the material on which the coil is wound
(d) the direction of current at the ends of the magnet.

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Answer

(d) the direction of current at the ends of the magnet.

Reason — The magnetic polarity at the two ends of a horse-shoe magnet depends on the direction of current at the ends of the magnet.

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