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KCET2023PhysicsElectromagnetic Induction

The current in a coil changes from 2 ~A to 5 ~A in 0.3 ~s . The magnitude of emf induced in the coil is 1.0 ~V . The value of self-inductance of the coil is

Options

  1. A1.0 mH
  2. B100 mH
  3. C0.1 mH
  4. D10 mH

Correct answer

B. 100 mH

Step-by-step solution

I=5-2=3 A t=0.3 ~s Induced emf, e=1 ~V We know that, e= L d I d t array ll & e= L I t L & = e t t = 1 3 0.3 =0.1 H =100 mH array

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