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AP EAMCET202120 Aug 2021Morning ShiftPhysicsElectromagnetic InductionActual

The induced emf cannot be produced by:

Options

  1. AMoving a magnet near a circuit
  2. BMoving a circuit near a magnet
  3. CChanging the current in one circuit placed near the other
  4. DMaintaining large but constant current in a circuit

Correct answer

D. Maintaining large but constant current in a circuit

Step-by-step solution

Faraday's law states that changing magnetic field induces a changing emf in a nearby conductor and changing current produces a changing magnetic field around the conductor. Therefore, induced emf cannot be produced maintaining large but constant current in a circuit.

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