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AP EAMCET202123 Aug 2021Morning ShiftPhysicsElectromagnetic InductionActual

The self-inductance of a coil is 50 mH . When a current of 1 A passing through the coil, reduces to zero at a steady rate in 0.1 ~s , then find the self-induced emf.

Options

  1. A5 ~V
  2. B0.05 ~V
  3. C50 ~V
  4. D0.5 ~V

Correct answer

D. 0.5 ~V

Step-by-step solution

Given, self inductance, L=50 mH Change in current, I=1 ~A Time, t=0.1 ~s As, emf ( )=L d i d t =50 10⁻³ 1 0.1 =0.5 ~V

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