The energy density in an electric field of intensity 100 V/m is

The electrical energy density (mu) stored in an electric filed intensity E is

The energy density per unit volume of medium in an electric field of intensity 400 V//m is (dielectric constant of material is 2 and epsi_(0) = 8.85 xx10^(-12) units)

ABC is an equilateral triangle of side 2m. There is a uniform electric field of intensity 100V/m in the plane of the triangle and parallel to BC as shown. If the electric potential at A is 200V, then the electric potentials at B and C.

The electrostatic energy stored in 1 litre volume of air when it is placed in uniform electric field of intensity 10^(3) V//m is

A cube of marble, of volume 1 cm^(3) and permittivity 75 pF/m, is in an electric field of intensity 200 V/m. The electrostatic energy in the cube is