What will be the net resultant force when the electric dipole moment begin mathsize 11px style straight P with rightwards arrow on top end style is parallel to non uniform electric field begin mathsize 11px style straight E with rightwards arrow on top end style?

Asked by Topperlearning User | 16th Apr, 2015, 02:00: PM

Expert Answer:

In this case there will also be a net force on the dipole since the positive and negative charges will feel different forces F = qE due to the different external field E at the location of charges +q and –q.

In the example shown the dipole and hence its dipole moment is aligned parallel to the external increasing field.

                                         

The force on positive charge F = qE exceeds the force on negative charge since the positive charge is in a stronger field.

The net resultant force is directed parallel to the direction of electric field.

Answered by  | 16th Apr, 2015, 04:00: PM