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JEE Main2005PhysicsElectromagnetic InductionActual

One conducting U tube can slide inside another as shown in figure, maintaining electrical contacts between the tubes. The magnetic field B is perpendicular to the plane of the figure. if each tube moves towards the other at a constant speed V, then the emf induced in the circuit in terms of B, and V where is the width of each tube will be

Options

  1. AB V
  2. B- B V
  3. Czero
  4. D2 B V

Correct answer

D. 2 B V

Step-by-step solution

| d d t |=2 B v

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