Electrostatics ...

The value (in vacuum) of energy density at a place in a region of electric field intensity E, due to it, is given by

Two conducting spheres of radii 3 cm and 1 cm are separated by a distance of 10 cm in free space. If the spheres are charged to same potential of 10 V each, the force of repulsion between them is

The electric field created by a point charge falls with distance r from the point charge as

Two large vertical and parallel metal plates having a separation of 1 cm are connected to a D.C. voltage source of potential difference X. A proton is released at rest midway between the two plates. It is found to move at 45° to the vertical just after release. Then, X is nearly

An electric dipole when placed in a uniform electric field E will have minimum potential energy, if the positive direction of dipole moments makes the following angle with E

A given charge is situated at a certain distance from an electric dipole in the end-on position experiences a force F. It the distance of the charge is doubled, the force acting on the charge will be

Two equal and opposite charge (+q and – q) are situated at x distance from each other, the value of potential at very far point will depend upon

The ratio of electric field and potential (E/V) at midpoint of electric dipole, for which separation is l

An electric dipole has a pair of equal and opposite point charges q and –q separated by a distance 2x. The axis of the dipole is defined as