KCET · Physics · Electromagnetic Induction
Two identical circular coils \(A\) and \(B\) are kept on a horizontal tube side by side without touching each other. If the current in the coil \(A\) increases with time, in response, the coil \(B\)
- A is attracted by A
- B remains stationary
- C is repelled
- D rotates
Answer & Solution
Correct Answer
(C) is repelled
Step-by-step Solution
Detailed explanation
As the current in coil \(A\) changes, the magnetic flux linked with coil \(B\) changes, hence as a result current induces in coil \(B\). The direction of induced current in coil \(B\) is opposite to that of the direction of current in coil \(A\) as shown in figure
Due to currents in opposite directions in the near by sides of the coil, the coil \(B\) is repelled.
Due to currents in opposite directions in the near by sides of the coil, the coil \(B\) is repelled.
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