Exercise 1

A $0.5 \mathrm{m}$ long metal rod $PQ$ completes the circuit as shown in the figure. The area of the circuit is perpendicular to the magnetic field of flux density $0.15 \mathrm{T}$. If the resistance of the total circuit is $3\mathrm{\Omega },$ calculate the force needed to move the rod in the direction as indicated with a constant speed of  $2{\text{m s}}^{-1.}$

A square coil $ACDE$ with its plane vertical is released from rest in a horizontal uniform magnetic field $\overrightarrow{B}$ of length $2 L.$The acceleration of the coil is

A metallic square loop $ABCD$ is moving in its own plane with velocity $v$ in a uniform magnetic field perpendicular to its plane as shown in the figure.

An electric field is induced

An inductor and a resistor are connected in series across A.C. supply. Which of the following phasor diagram may be correct?

In the circuit shown in figure, if both the bulbs $B_1$ and $B_2$ are identical then

Displacement current exists in the region between the plates of a parallel plate capacitor if:

The displacement current flows in a dielectric of a capacitor when the potential difference across its plates.

The electric displacement current through a surface area $S$ is proportional to the