MHT CET20227 Aug 2022Evening ShiftPhysicsElectromagnetic InductionActual
The magnetic flux linked with the coil with time as =4 t ^2+3 t +7 . The magnitude of the induced e.m.f at t=2 ~s is
Options
- A16 ~V
- B29 ~V
- C11 ~V
- D19 ~V
Correct answer
A. 16 ~V
Step-by-step solution
Given that Total magnetic flux =3 t^2+4 t+7 We know that, The induced e.m.f e = | - d dt |= d (3 t ^2+4 t +7 . dt =6 t +4 Now, the induced e.m.f at t =2 sec e=6 2+4=16 volt Hence, the magnitude of induced e.m.f is 16 volt