InterviewSolution
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InterviewSolution
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The diagram given below shows two coils X and Y. The coil X is connected to a battery S and a key K. The coil Y is connected to a galvanometer G.When the key K is closed state the polarity. i) At the end B of the coil X. ii) At the end C of the coil Y. iii) At the end C of the coil Y if the coil Y is (a) moved towards the coil X, (b) moved away from the coil X. |
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Answer» i) On closing the key K, the current at the end B of the coil X is anti-clockwise, therefore at this end there is a north pole. ii) While closing the key, polarity at the end C of the coil Y will be north. But there will be no polarity at the end C of the coil Y when the current becomes steady in the coil X iii) a) With the key K closed, while the coil Y is moved towards the coil X, the polarity at the end C of the coil Y is north. b) With the key K closed, while the coil Y is moved away from the coil X, the polarity at the end C of the coil Y is south. |
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