MHT CET202122 Sep 2021Evening ShiftPhysicsElectromagnetic InductionActual
The magnetic flux (in weber) in a closed circuit of resistance 20 varies with time t second according to equation =5 t^2-6 t+9 . The magnitude of induced current at t=0.2 second is
Options
- A0.08 A
- B1 A
- C0.2 A
- D0.4 A
Correct answer
C. 0.2 A
Step-by-step solution
aligned & =5 t ^2-6 t +9 & e =- d dt =-(10 t -6) & At t =0.2 ~s ,| e |=4 ~V & i = | e | R = 4 20 =0.2 ~A aligned