Electrostatics ...

Three infinitely long charge sheets are placed as shown in figure. The electric field at point P is

Top of the stratosphere has an electric field E (in units of V/m) nearly equal to

Infinite charges of magnitude q each lying at x = 1, 2, 4, 8…. metre on X-axis. The value of intensity of electric field at point x = 0 due to these charges will be

A square of side \'a\' has charge Q at its centre and charge `q\' at one of the corners. The work required in moving the charge \'q\' from one corner to the diagonally opposite corner is

A pendulum bob of mass 30.7 × 10^–6 kg and carrying a charge 2 × 10^–8 C is at rest in a horizontal uniform electric field of 20000 V/m. The tension in the thread of the pendulum is (g = 9.8 m/s²)

An infinite line charge produce a field of 7.182 × 10⁸ N/C at a distance of 2 cm. The linear charge density is

Two thin wire rings each having a radius R are placed at a distance d apart with their axes coinciding. The charges on the two rings are +q and –q. The potential difference between the centres of the two rings is

A charged ball B hangs from a silk thread S, which makes an angle θ with a large charged conducting sheet P, as shown in the figure. The surface charge density a of the sheet is proportional to

Two point charges +8q and –2q are located at x = 0 and x = L respectively. The location of a point on the x-axis at which the net electric field due to these two point charge is zero is