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Byju's Answer

Standard XII

Physics

Mutual Induction

The diagram s...

Question

The diagram shows two circular loops of wire (A and B) centred on and perpendicular to the x-axis, and oriented with their planes parallel to each other. The y-axis passes vertically through loop A(dashed line). There is a current $I_{B}$ in loop B as shown. Possible actions which we might perform on loop A are.

Move A to the right along x axis closer to B

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Move A to the left along x axis away from B

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As viewed from above, rotate A clockwise about y axis

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As viewed from above, rotate A anticlockwise about y axis

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Solution

The correct option is A Move A to the right along x axis closer to B
The direction of current $I_{B}$ is anty clockwise, the direction of the field due to loop B is towards emf it means magnetic field due to loop A is increased towards right then only this possible, Hence loop A move right closer to B.According to Lenz's law.

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