MCQ
Displacement current goes through the gap between the plates of a capacitor when the charge of the capacitor:
  1. Increases.
  2. Decreases.
  3. Does not change.
  4. Is zero.
  • $A$ and $B$
  • B
    $B$ and $C$
  • C
    $C$ and $D$
  • D
    $A$ and $C$

Answer

Correct option: A.
$A$ and $B$
Displacement current inside a capacitor,
$\text{i}_\text{d}=\in_0\frac{\text{d}\phi_\text{E}}{\text{dt}},$ where
$\phi_\text{E}$ is the electric flux inside the capacitor.
Up to the time the electric flux changes, there will be a displacement current. This is possible when the charge on a capacitor changes. Therefore, the displacement current goes through the gap between the plates of a capacitor when the charge of the capacitor or electric field increases or decreases inside the capacitor.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A car of $800 \mathrm{~kg}$ is taking turn on a banked road of radius $300 \mathrm{~m}$ and angle of banking $30^{\circ}$. If coefficient of static friction is $0.2$ then the maximum speed with which car can negotiate the turn safely : $\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2, \sqrt{3}=1.73\right)$
The average kinetic energy of a gas at $-23°C$ and $75\, cm$ pressure is $5 \times {10^{ - 14}}\,erg$ for ${H_2}$. The mean kinetic energy of the ${O_2}$ at $227°C$ and $150\, cm$ pressure will be
Wave has simple harmonic motion whose period is $4\; sec$ while another wave which also possesses simple harmonic motion has its period $3\; sec$. If both are combined, then the resultant wave will have the period equal to ....... $sec$
There is rod of length $l$. The velocities of its two ends are $v_1$ and $v_2$ in opposite directions normal to the rod. The distance of the instantaneous axis of rotation from $v_1$ is:
Two blocks of masses $5\, kg$ and $4\, kg$ are in contact with each other on a frictionless table. When a horizontal force of $9\, N$ is applied to the block of mass $5\, kg$ , then the value of the force of contact between the two blocks is ........ $N$
A vessel at rest explodes into three pieces. Two pieces having equal masses fly off perpendicular to one another with the same velocity $30$ meter per second. The third piece has three times mass of each of other piece. The magnitude and direction of the velocity of the third piece will be
Two uniform circular discs are rotating independently in the same direction around their common axis passing through their centres. The moment of inertia and angular velocity of the first disc are $0.1 \;kg - m ^{2}$ and $10\; rad \,s^{-1}$ respectively while those for the second one are $0.2 \;kg - m ^{2}$ and $5\; rad \,s ^{-1}$ respectively. At some instant they get stuck together and start rotating as a single system about their common axis with some angular speed. The Kinetic energy of the combined system is ...........$J$
Find the odd one out and give the reason: speed, distance, mass, velocity:
The mean free path of molecules of a certain gas at $STP$ is $1500\,d$, where $d$ is the diameter of the gas molecules. While maintaining the standard pressure, the mean free path of the molecules at $373\,K$ is approximately $..........\,d$
The mean free path of the molecules of a gas is proportional to: