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NEET2018PhysicsElectromagnetic InductionActual

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

Options

  1. Ais attracted by A
  2. Bremains stationary
  3. Cis repelled
  4. Drotates

Correct answer

C. is repelled

Step-by-step solution

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.

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