Mutual Inductance — MCQ Practice

Two coils have a mutual inductance of $0.05,\text{H}$. The current in the primary coil changes from $10,\text{A}$ to $2,\text{A}$ in $0.05,\text{s}$. What is the magnitude of the average induced EMF in the secondary coil?

Two coils have self-inductances $L_1 = 2,\text{mH}$ and $L_2 = 8,\text{mH}$. If the coefficient of coupling between them is $0.5$, what is their mutual inductance?

Which of the following factors does NOT affect the mutual inductance between two coils?

A long solenoid of length $l$ and cross-sectional area $A$ has $N_1$ turns. A smaller coil of $N_2$ turns is wound tightly around the center of the solenoid. If the permeability of free space is $\mu_0$, what is the mutual inductance of this system?

If the current in a primary coil is given by $I(t) = 5 sin(100\pi t),\text{A}$ and the mutual inductance between it and a secondary coil is $0.2,\text{H}$, what is the peak induced EMF in the secondary coil?

Two coils are placed such that their axes are perpendicular to each other. If a current is passed through one coil, what can be said about the mutual inductance between them?