The adjacent diagram shows a coil would around a soft iron bar XY. (a) – InterviewSolution

InterviewSolution

1.

The adjacent diagram shows a coil would around a soft iron bar XY. (a) State the polarity at the end X and Y as the switch is pressed. (b) Suggest one way increasing the strength of electromagnet so formed.

Answer»

(a)X-north pole, Y –south pole.

(b)By reducing resistance of circuit by mean of rheostat to increase current.

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