Three charges are arranged as shown. What is the electric potential energy of the system? Q = 150 nC(nano-coulomb) and a = 0.12 m.

How will you determine the electrical potential energy of a system of charges?

Three charges -q, Q and -q are placed at equal distances on a straight line. If the total potential energy of the system is zero, then what is the ratio q/Q ?

Charges +2 xx 10^(-7)C, -4 xx 10^(-7)C and +8 xx 10^(-7)C are placed at the vertices of an equilateral triangle of side 10 cm in air. Determine the electrical potential energy of this system of charges.

Two (-ve) charge, each of magnitude q are situated at 2r distance apart. A (+ve) charge q is lying at the centre between them. The potential energy of the system is U_1 If the two nearest charges are mutually interchanged and the potential energy becomes U_2 then U_1/U_2 will be

Three point charges q , 2q and 8q are to be placed on a 0.09m long straight line. Find the positions of the charges so that the potential energy of this system becomes minimum. In this situation, find the intensity at the position of the charge q due to the other two charges?

Three point charges q, 2q and- 4q are in air at three points so-that the distance between any two charges is 10 cm. Calculate total potential energy of the system if q = 3xx10^2 esu.

At the three vertices of an equilateral triangle of side 10 cm, +1.0 xx 10^(-7)C, +2.0 xx 10^(-7)C and -4.0 xx 10^(-7)C charges are placed. Calculated the potential energy of the system of these charges.

Four identical point masses , each of mass m and carrying charge +q are placed at the comes of a square of sides a' on a frictionless plain surface .If the particles are released simulataneously ,the kinetic energy of the system when they are infinitcly far apart is