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AP EAMCET202018 Sep 2020Morning ShiftPhysicsElectromagnetic InductionActual

The coefficient of mutual inductance between the primary and the secondary coil of a transformer is (0.2 H ). When the current in the primary changes by (5 As ⁻¹ ), then the induced emf in the secondary will be

Options

  1. A(5 ~V )
  2. B(1 ~V )
  3. C(25 ~V )
  4. D(10 ~V )

Correct answer

B. (1 ~V )

Step-by-step solution

Given, coefficient of mutual induction, (M=0.2 H ) The rate of change in current in primary coil. ( d I d t =5 As ⁻¹ ) ( ) Induced emf in the secondary coil, (e=M d I d t =0.2 5=1 ~V )

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