Electrostatics ...

A region surrounding stationary electric dipoles has

Two electric dipoles of moment P and 64 P are placed in opposite direction on a line at a distance of 25 cm. The electric field will be zero at point between the dipoles whose distance from the dipole moment P is

A sample of HCl gas is placed in an electric field of 3 × 10⁴ NC^–1. The dipole moment of each HCl molecule is 6 × 10^–30 C × m. The maximum torque that can act on a molecule is

The electric field and the potential of an electric dipole vary with distance r as

A dipole of electric dipole moment p is placed in a uniform electric field of strength E. If θ is the angle between positive directions of p and E, then the potential energy of the electric dipole is largest when θ is

A disk of radius a/4 having a uniformly distributed charge 6C is placed in the x–y plane with its centre at (–a/2, 0, 0). A rod of length a carrying a uniformly distributed charge 8 C is placed on the a-axis from x = a/4 to x = 5a/4. Two point charges –7 C and 3 C are placed at (a/4, – a/4, 0) and(–3 a/4, 3 a/4, 0), respectively. Consider a cubical surface formed by six surfaces x = ± a / 2, y = ± a / 2, z = ±a / 2. The electric flux through this cubical surface is