Electrostatics ...

In the following diagram the work done in moving a point charge from point P to point A, B and C is respectively as W_A, W_B and W_C, then

Ten electrons are equally spaced and fixed around a circle of radius R. Relative to V = 0 at infinity, the electrostatic potential V and the electric field E at the centre C are

Two positive point charges of 12µC and 8µC are 10 cm apart. The work done in bringing them 4 cm closer is

Three identical point charges, as shown are placed at the vertices of an isosceles right angled triangle. Which of the numbered vectors coincides in direction with the electric field at the mid-point M of the hypotenuse

If an electron moves from rest from a point at which potential is 50 volt to another point at which potential is 70 volt, then its kinetic energy in the final state will be

As shown in the figure, charges +q and –q are placed at the vertices B and C of an isosceles triangle. The potential at the vertex A is

A charged particle of mass 5 × 10^–5 kg is held stationary in space by placing it in an electric field of strength 10⁷NC^–1 directed vertically downwards. The charge on the particle is

Three charges Q, + q and +q are placed at the vertices of a right-angled isosceles triangle as shown. The net electrostatic energy of the configuration is zero if Q is equal to

Figures below show regular hexagons, with charges at the vertices. In which of the following cases the electric field at the centre is not zero