# An Electric Dipole of Dipole Moment Vecp is Placed in a Uniform Electric Field Vece with Its Axis Inclined to the Field. Write an Expression for the Torque Vect Experienced by the Dipole in Vector - Physics (Theory)

Short Note

An electric dipole of dipole moment vecP is placed in a uniform electric field vecE with its axis inclined to the field. Write an expression for the torque vecT experienced by the dipole in vector form. Show diagrammatically how the dipole should be kept in the electric field so that the torque acting on it is:
(i) maximum
(ii) Zero

#### Solution

The torque experienced by the dipole is written as vecT = vecP xx vecE
(i) The torque experienced by a dipole is maximum when it is placed perpendicular to the direction of electric field as shown.

(ii) T= 0 if the dipole moments are parallel to the direction of electric field.

Concept: Dipole in a Uniform External Field
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