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Explain the force acting on electric dipole when it is placed parallel or anti parallel to electric field. |
Answer» SOLUTION :When `vecp` is PARALLEL to `vecE`or antiparallel to `vecE`. In either case, the net TORQUE is zero, but there is a net force on the dipole if `vecE`is not uniform.  It is easily seen that when `vecp` is parallel to `vecE` , the dipole has a net force in the direction of increasing field. When `vecp` is antiparallel to `vecE`, the net force on the dipole is in the direction of decreasing filed. In general, the force depends on the orientation of `vecP` with respect to `vecE`. |
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