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MHT CET20239 May 2023Morning ShiftPhysicsElectromagnetic InductionActual

The magnetic flux through a loop of resistance 10 varying according to the relation =6 t ^2+7 t +1 , where is in milliweber, time is in second at time t=1 ~s the induced e.m.f. is

Options

  1. A12 mV
  2. B7 mV
  3. C19 mV
  4. D19 V

Correct answer

C. 19 mV

Step-by-step solution

Given R =10 , =6 t ^2+7 t +1 mWb , t =1 ~s From e = d dt , e= d d t (6 t^2+7 t+1 )=12 t+7 Put t =1 in the above equation, e =19 mV

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