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Two hollow-core solenoids, A and B, are connected by a wire and separated by a large distance, as shown in the diagram. Two bar magnets, 1 and 2 are suspended just above the solenoids. If the magnet 1 is dropped through solenoid A as shown, then the magnet 2 will simultaneously be

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Repelled by a magnetic force away from solenoid B

Attracted by a magnetic force towards solenoid B

Repelled by an electric force towards solenoid B

Unaffected by solenoid B.

answer is A.

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Detailed Solution

As magnet falls flux linked increases. Hence, current in solenoid A flows anti-clock wise as seen from top. The current in solenoid B is also anti-clockwise. Hence, magnet ‘2’ will be attracted become its south pole is facing towards.

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