Home
Class 12
PHYSICS
An electric dipole of moment p is kept a...

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?

Text Solution

Verified by Experts

Fields intensity at a distance `r` form the line of charge is `e=(lambda)/(2piepsilon_(0)r)`
The force on the dipole is `F=-p(dE)/(dr)`
`=-p[(-lambda)/(2piepsilon_(0)r^(2))]=(plambda)/(2piepsilon_(0)r^(2))`
Hence the net force on dipole due to the wire will be attractive.
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS AND GAUSS LAW

    NARAYNA|Exercise C.U.Q|133 Videos

  • ELECTROSTATICS AND GAUSS LAW

    NARAYNA|Exercise Level 1(C.W)|24 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NARAYNA|Exercise ADDITIONAL PROBLEMS|14 Videos

  • EXPERIMENTAL PHYSICS

    NARAYNA|Exercise Comprehension type|6 Videos

Similar Questions

Explore conceptually related problems

In the figure shown, an electric dipole is placed at a distance x from an infinitely long rod of linear charge density lambda . ( a ) Find the net force acting on the dipole ? ( b ) What is the work done in rotating the dipole through 180^(@) ? ( c ) If the dipole is slightly rotated about its equilibrium position, find the time period of oscillation. Assume that the dipole is linearly restrained.

In figure-, an electric dipole is placed at a distance x from an infinitely long rod of linear charge density lambda . (a) Find the net force acting on the dipole (b) What is the work done in rotating the dipole through 180^(@) (c ) If the dipole is slightly rotated about its equilibrium position, find the time period of oscillation. Assume that the dipole is linearly restrained. [(a)(lambdaaq)/(piin_(0)x^(2)),(b) (2lambdaaq)/(piin_(0)x),(c ) 2pisqrt((2piin_(0)mx^(2)a)/(lambdaq))]

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.

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 charge q is placed at a distance r from a very long charged thread of unoform linear charge density lambda . Find out total electric force experienced by the line charge due to the point charge. (Neglect gravity).

A point charge q is placed at a distance r from a very long charged thread of unoform linear charge density lambda . Find out total electric force experienced by the line charge due to the point charge. (Neglect gravity).

A small electric dipole of dipole moment P is placed at a distance r from one infinitely long uniformly charged, straight conductor. If lambda is the linear charge density of straight conductor and axis of the dipole is perpendicular to the straight conductor then the force acting on the dipole is