AIIMS2007PhysicsElectromagnetic Induction
With the decrease of current in the primary coil from 2 amperes to zero value in (0.01 ~s ) the emf generated in the secondary coil is 1000 volts. The mutual inductance of the two coils is
Options
- A(1.25 ~H )
- B(2.50 ~H )
- C(5.00 ~H )
- D(10.00 ~H )
Correct answer
C. (5.00 ~H )
Step-by-step solution
Induced ( emf = -M d I_P d t ) Where (M ) is the mutual inductance of two coils and ( d I_P d t ) is the rate of change of current in the primary. ( aligned & 1000 ~V = -M(0 ~A -2 ~A ) 0.01 ~s & or M= (1000 ~V )(0.01 ~s ) (2 ~A ) =5 H . aligned )