Derive an expression for electric potential at a point due to a system of N charges.

Write an expressions for electric potential due to a continuous distribution of charges.

Write an equation for potential due to a system of charges.

Derive an expression for the electric potential in a electric field of positive point charge at distance r.

Obtain the equation of electric field at a point by system of 'n' point charges.

Derive an expression for elastic potential energy per unit volume stored for the wire is 1/2 x stress x strain.

Derive the formula for the electric potential energy of system of two charges.

A charge +q is fixed at each of the points x=x_0 , x=3x_0 , x=5x_0 ,………… x=oo on the x axis, and a charge -q is fixed at each of the points x=2x_0 , x=4x_0 , x=6x_0 , ………… x=oo . Here x_0 is a positive constant. Take the electric potential at a point due to a charge Q at a distance r from it to be Q//(4piepsilon_0r) .Then, the potential at the origin due to the above system of

Write an expression for potential at the point outside a uniformly charged spherical shell outside on the surface and inside the shell.

Derive the formula for the electric potential energy of system of three charges.

Obtain the equation of electric potential energy of a system of two electric charges in external electric field.