Electrostatics ...

An electron dipole is placed along the x-axis at the origin O. A point P is at a distance of 20 cm from this origin such that OP makes an angle θ with the x-axis, the value of θ would be

Electric charges q, q,–2q are placed at the corners of an equilateral triangle ABC of side l. The magnitude of electric dipole moment 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 × 10^–2 cm away, form a dipole. If this 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

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

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

An electric dipole in a uniform electric field experiences (When it is placed at an angle θ with the field)

The electric field due to an electric dipole at a distance r from its centre in axial position is E. If the dipole is rotated through an angle of 90° about its perpendicular axis, the electric field at the same point will be

A molecule with a dipole moment p is placed in an electric field of strength E. Initially the dipole is aligned parallel to the field. If the dipole is to be rotated to be anti-parallel to the field, the work required to be done by an external agency is