NEET Physics Electrostatic Potential And Capacitance Torque Acting On Dipole MCQs

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:

A dipole of moment $\overrightarrow{p} = p\hat{k}$ is placed at the origin. The electric field at a point $(x, y, z)$ due to the dipole is proportional to:

A dipole is placed parallel to the electric field. If $W$ is the work done in rotating the dipole by 60°, then the work done in rotating it by 180° 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:

A dipole of moment $\vec{p}$ is placed in an electric field $\vec{E}$. The dipole makes an angle $heta$ with the field. The torque experienced by the dipole is $\vec{au}$. If the dipole is now rotated by a small angle $dheta$ against the torque, the work done by the external agent 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:

An electric dipole of dipole moment $\vec{p}$ is placed in a uniform electric field $\vec{E}$. The torque acting on the dipole is maximum when the angle between $\vec{p}$ and $\vec{E}$ is:

No torque acts on an electric dipole placed in a uniform electric field when the angle between the dipole moment and the field is:

The torque on a dipole in a uniform electric field is $au$. If the dipole moment is doubled while keeping the electric field strength constant, the new torque will be:

An electric dipole is placed in a uniform electric field. The net force on the dipole is: