NEET Physics Electrostatic Potential And Capacitance MCQs

A parallel plate capacitor with capacitance C is charged to a potential V. It is then disconnected from the battery and the distance between the plates is doubled. What happens to the energy stored in the capacitor?

A short electric dipole is placed at the origin with its axis along the x-axis. If the dipole moment is $p$, the locus of points where the electric potential is zero is given by:

A very small electric dipole is placed at origin with its dipole moment directed along positive x-axis. A semicircular arc of radius R is drawn in the y-z plane with its centre at the origin. The potential at any arbitrary point on this arc is:

A parallel plate capacitor is being charged by a constant current $I$. The area of the plates is $A$ and the separation is $d$. The displacement current density between the plates is:

An electric dipole of moment $\vec{p}$ is placed in a uniform electric field $\vec{E}$. If $heta$ is the angle between $\vec{p}$ and $\vec{E}$, and $U$ is the potential energy, then which of the following is incorrect?

A neutral conducting sphere is placed in a uniform electric field $\vec{E}$. Which of the following statements is incorrect regarding the induced dipole moment $\vec{p}$ on the sphere?

An electric dipole of moment $p$ is placed at the center of a thin spherical shell of radius $R$ carrying a uniformly distributed charge $Q$. The potential energy of the dipole is:

A dipole with dipole moment $\overrightarrow{p}$ is placed in a non-uniform electric field $\overrightarrow{E} = E_0(1 + \alpha x)\hat{i}$. If the dipole is aligned along the x-axis, the net force experienced by the dipole is:

Two dipoles with dipole moments $\vec{p_1}$ and $\vec{p_2}$ are placed at a distance $r$ apart. If the dipoles are perpendicular to each other, the potential energy of the system is:

An electric dipole with dipole moment $\vec{p}$ is placed in a uniform electric field $\vec{E}$. If the dipole is rotated from an initial angle $heta_1$ to a final angle $heta_2$ with respect to the field, the change in potential energy of the system is: