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AIIMS2018PhysicsElectromagnetic Induction

The radius of the circular conducting loop shown in figure is R . Magnetic field is decreasing at a constant rate . Resistance per unit length of the loop is . Then current in wire A B is ( A B is one of the diameters)

Options

  1. AR 2 from B to A
  2. BR 2 from A to B
  3. C2 R from A to B
  4. Dzero

Correct answer

D. zero

Step-by-step solution

As per Lenz's law, e.m.fs of the same magnitude are induced in the two loops in the clockwise direction. Thus current is induced

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