MHT CET20249 May 2024Morning ShiftPhysicsElectromagnetic InductionActual
Two coils have a mutual inductance 5 10⁻³ H . The current changes in the first coil according to the equation I ₁= I ₀ t where I ₀=10 ~A and =100 rad / s . What is the value of the maximum e.m.f. in the coil?
Options
- A2 ~V
- B3 ~V
- C4 ~V
- D5 ~V
Correct answer
D. 5 ~V
Step-by-step solution
e = MdI dt ...(i) e = M ~d dt ( I ₀ t ) Now, d dt ( I ₀ t )= I ₀ t For maximum value of emf, dl dt is maximum array ll & t =1 & dI dt = I ₀ ...(ii) & e =0.005 10 100 =5 ~V array ...(from (i) and (ii))