Calculate electrostatic potential energy stored in a system consisting of two point charges `100muC` and `40muC` separated by a distance of 9cm, in vacuum.

(a) Determine the electrostatic potential energy of a system consisting of two charge 7 muC and -2 muC (and with no external field) placed at (-9 cm, 0,0) and (9 cm, 0,0) respectively. (b) How much work is required to seperate the two charges infinitely away from each other ? (c) Suppose that the same system of charges is now placed in an external electric field E = A xx 1//r^(2) , where A = 9xx10^(5) C m^(-2) . What would the electrostatic energy of the configuration be ?

Find out potential energy of the two point charge system having charges q_(1) and q_(2) separated by distance r.

The electrostatic potential energy between proton and electron separated by a distance 1 Å is

The net electric force on a charge of +3 muC at the mid-point on the line joining two charges of magnitude +2 muC and +2 muC separated by the distance of 6 mm, is

An electric dipole consists of two opposite charges of magnitude 1muC separated by a distance of 2cm .The dipole is placed in an electric filled 10^(-5)Vm^(-1) .The maximum torque that the field exert on the dipole is

Calculate the electric potential at the center of a square of side sqrt(2) m , having charges 100 muc, -50 muC, 20 muc and -60 muC at the four corners of the square.

find the electric field strength due to a point charge of 5 muC at a distance of 80 cm from the charge.

The force of attractions between two charges 8muC and -4muC is 0.2 N. Find the distance of separation.

An electric dipole consists of two opposite charges each of magnitude 2 muC separated by a distance 1 cm. The dipole is placed in an external field of 10^(3) N/C. The maximum torque on the dipole is