The unit of electric field is not equivalent to? Mark as favorite Copy Link J / C N / C J / Cm V / m Check Answer
The number of electrons contained in one coulomb of charge is? Mark as favorite Copy Link 1.6 × 10^19 6.25 × 10^18 6.25 × 10^17 1.6 × 10^19 Check Answer
An electric dipole is placed at an angle of 30° to a non-uniform electric field. The dipole will experience? Mark as favorite Copy Link a torque only a translational force only in the direction of the field a translational force only in the direction normal to the direction of the field a torque as well as a translational force Check Answer
An electric dipole is placed at the centre of a sphere then? Mark as favorite Copy Link the electric field is not zero anywhere on the sphere. the electric field is zero on a circle on the sphere. the flux of the electric field through the sphere is not zero. the electric field is zero at every point of the sphere. Check Answer
An electric dipole will experience a net force when it is placed in? Mark as favorite Copy Link a non-uniform electric field None of these a uniform electric field both (a) and (c) Check Answer
If a linear isotropic dielectric is placed in an electric field of strength E, then the polarization P is? Mark as favorite Copy Link directly proportional to E directly proportional to E inversely proportional to E independent of E Check Answer
If the flux of the electric field through a closed surface is zero, then? Mark as favorite Copy Link the charge in the vicinity of the surface must be zero the charge inside the surface must be zero the electric field must be zero everywhere on the surface the electric field may not be zero everywhere on the surface Check Answer
Corona discharge is caused by? Mark as favorite Copy Link Charges moving into the ionized air under the effect of this electric field. Ionization of gas molecules due to dielectric breakdown All of the above High charge density causing high electric fields near a metal’s surface. Check Answer
When a comb rubbed with dry hair attracts pieces of paper. This is because the? Mark as favorite Copy Link comb induces a net dipole moment perpendicular to the direction of field comb polarizes the piece of paper electric field due to the comb is uniform comb induces a net dipole moment opposite to the direction of field Check Answer