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JIPMER2013PhysicsElectromagnetic Induction

In 0.2 s, the current in a coil increases from 2.0 A to 3.0 A. If inductance of coil is 60 mH, then induced current in external resistance of 3 will be

Options

  1. A1 A
  2. B0.5 A
  3. C0.2 A
  4. D0.1 A

Correct answer

D. 0.1 A

Step-by-step solution

Induced emf aligned |e| & =L d i d t = (60 10⁻³ ) (3.0-2.0) 0.2 & = 60 10⁻³ 1 0.2 =0.3 ~V aligned Induced current, t i= e R = 0.3 3 =0.1 ~A

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