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AP EAMCET20228 Jul 2022Evening ShiftPhysicsElectromagnetic InductionActual

A pair of adjacent coils having a mutual inductance, M . The current in one coil changes from 0 to 16 ~A in 0.3 ~s and the change of flux linkage with the other coil is 40 ~Wb . The value of M is

Options

  1. A0.4 H
  2. B0.12 H
  3. C2.5 H
  4. D8.3 H

Correct answer

C. 2.5 H

Step-by-step solution

Coefficient of mutual induction between 2 coils is given by M= Flux change in Ind coil Current change in Ist coil Given, flux change =40 ~Wb and current change =16-0=16 ~A so, M= 40 16 =2.5 H

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