Given a cube with point charges q on each of its vertices. Calculate the force exerted on any of the charges due to rest of the 7 charges.

A cube of side 'a' has point charges +Q located at each of its vertices except at the origin where the charge is -Q. The electric field at the centre of cube is :

A cube of side b has a charge q at each of its vertices. Determine the potential and electric field due to this charge array at the center of the cube.

Eight point charges , each q , are placed on the vertices of a cube of side a . Find the potential energy of the system of charges.

A point charge q is kept at a corner of a cube

Three identical point charges q are kept on each vertices of an equilateral triangle of side a. Calculate the work done in slowly moving the charges to the mid points of each side, covering the shortest possible distance.

Does the force on a charge due to another charge depend on the charges present nearby?

Four identical charged particles of charge q are kept on the vertices of a cube with side 20 cm as shown in the figure. Calcualte the electric potential at point P in the centre of the cube due to all these charges.

A regular pentagon has four charges each +q at four of its vertices. At the centre of the pentagon, a charge +q is kept. If the distance of a vertex from the center is a the magnitude of the net force acting on the charge at the center is

Assertion :The force with which two charges attract or repel each other are not affected by the presence of a third charge. Reason : Force on any charge due to a number of other charges is the vector sum of all the forces on that charge due to other charges, taken one at a time.