Electrostatics ...

Electric charges q, q,–2q are placed at the corners of an equilateral triangle ABC of side l. The magnitude of electric dipole moments of the system is

The electric field at a point on equatorial line of a dipole and direction of the dipole moment

Two opposite and equal charges 4 × 10^–8 coulomb when placed 2 × 10² cm away, form a dipole. If dipole is placed in an external electric field 4 × 10⁸ newton/coulomb, the value of maximum torque and the work done in rotating it through 180° will be

If E_α be the electric field strength of a short dipole at a point on its axial line and E_e that on the equatorial line at the same distance, then

An electric dipole is placed in an electric field generated by point charge

A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then electric field at Q is proportional to

If the magnitude of intensity of electric field at a distance x on axial line and at a distance y on equatorial line on a given dipole are equal, then x : y is

The electric intensity due to a dipole of length 10 cm and having a charge of 500 µC, at a point on the axis at a distance 20 cm from one of the charges in air, is

Electric potential at an equatorial point of a small dipole with dipole moment P (r, distance from the dipole) is