A dipole with an electric moment p is located at a distance r from a along thread charge uniformly with a linear density `lambda`. Find the force F acting on the dipole if the vector p is oriented
(a) along the thread
(b) along the radius vector r
(c ) at the right angles to the thread and the radius vector r.

An electric dipole of moment p is kept at a distance r form an infinte long charged wire of linear charge density lambda as shown.Find the force acting on the dipole?

A dipole of electric moment p is located at a distance r from a long thread charged with a linear density lambda . Find the force on the dipole if (a) if is placed parallel to the thread , (b) perpendicular to the thread . [Hint : Field due to long thread = (1)/(2 pi epsi_(0)) (lambda)/(r) ]

A point dipole with an electric moment p is located at a distance l from an infinite conducting plane. Find the modulus of the vector of the force acting on the dipoel if the vector p is perpendicular to the plane.

A short electric dipole is placed at a distance x from centre O on the axis of a ring of radius R and charge Q is uniformly distributed over tis. The net force acting on the dipole will be

As shown in the figure an electric dipole lies at a distance x from the centrr of a chargerd ring of radius R with charge Q uniformly distributed over it .The net force acting on the dipole is

A tiny electric dipole of dipole moment p is palced at a distance r from an infinitely long wire, with its vecp normal to the wire. If the linear charge density of the wire is lambda , the electrostatic force acting on the dipole is equal to

A small current-carrying loop is located at a distance r from a long straight conductor with current I . The magnetic moment of the loop is equal to p_(m) . Find the magnitude and direction of the force vector applied to the loop if the vector p_(m) (a) is parallel to the stratight conductor, (b) is oriented along the radius vector r , (c) coincides in direction with the magnetic field produced by the current I the point where the loop is located.

A short electric dipole is placed at a distance x from centre O on the axis of a ring of radius R and charge Q is uniformly distributed over tis. [(a) (find the net force acting on the dipole b) The work done external agent in rotating the dipole through 180^(@) would be