in which orientation, a dipole placed in a uniform field is in (a) stable (b) unstable equillibrium?

Asked by poojaparmar065 | 27th Apr, 2014, 12:16: PM

Expert Answer:

This is the most stable configuration of an electric dipole in a uniform electric field. The length of the dipole makes 0 0with the electric field.

The potential energy of the dipole at this position is,

U = - p . E = -pE cos0 = -pE

Which is the minimum potential energy of an electric dipole.

 

The potential energy of the dipole at this position is,

U = p . E = pE cos0 = pE

Which is the maximum potential energy of an electric dipole

Answered by  | 27th Apr, 2014, 03:44: PM

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