Two identical loops, one of copper and the other of aluminium are rotated with the same angular speed in the same magnetic field. Compare the induced emf in the two coils.

Two identical loops, one of copper and the other of aluminium are rotated with the same angular speed in the same magnetic field. Compare the current produced in the two coils. Justify your answer.

In a given circuit, inductor L and resistor R have identical resistance. Two similar electric lamps ${\mathrm{B}}_1$ and ${\mathrm{B}}_2$ are connected as shown below. When switch S is closed, which one of the lamps lights up earlier.

In a given circuit, inductor L and resistor R have identical resistance. Two similar electric lamps ${\mathrm{B}}_1$ and ${\mathrm{B}}_2$ are connected as shown in Fig. $9.52$ When switch S is closed, will the lamps be equally bright after some time? Justify your answer.

A bar magnet is moved in the direction indicated by the arrow between two coils $\mathrm{PQ}$ and $\mathrm{CD}$ in Fig. $9.53$. Predict the directions of induced current in each.

A coil is connected to a low voltage bulb $L$ and placed near another coil $A$  as shown in Figure. Explain the following observations: Bulb will light.

A coil $B$ is connected to a low voltage bulb $L$ and placed near another coil $A$ as shown in figure. Explain the following observations: Bulb gets dimmer if the coil is moved upwards.

The closed loop $\mathrm{PQRS}$ is moving into the uniform magnetic field acting at right angles to the plane of the paper as shown in figure. State the direction in which the induced current flows in the loop.

A plot of magnetic flux $\left(\Phi \right)$ versus current $\left(I\right)$ is shown in figure for two inductors $A$  and $B$, Which of the two has larger value of self-inductance ?