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AP EAMCET202125 Aug 2021Morning ShiftPhysicsElectromagnetic InductionActual

A copper rod is moved in a magnetic field. The charge developed across its ends will be proportional to

Options

  1. Amagnetic flux
  2. Brate of change of magnetic flux
  3. C1 / velocity of the rod
  4. D1 / magnitude of the magnetic field

Correct answer

B. rate of change of magnetic flux

Step-by-step solution

When a copper rod is moved in magnetic field, an emf is induced in such a way that current induced will try to oppose the motion of the rod. As we know, array lll & e d d t & & i R d d t & ( e=i R) & d Q d t R d d t & ( i= d Q d t ) & d Q d t d d t & array Hence, charge developed across the ends of the rod will be proportional to rate of change of magnetic flux.

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