What is potential energy of a dipole moment when it is perpendicular to a uniform electric field?
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The potential energy U of an electric dipole in an electric field is conventionally given by
U = - p.E = - p E cos theta
Where p is the electric dipole moment, E is the electric field, and theta the angle between the directions of p and E.
According to this the potential energy is - pE when the dipole is aligned with the field direction, 0 when it is rotated perpendicular to the field and + pE when it's direction is opposite to that of the field.
U = - p.E = - p E cos theta
Where p is the electric dipole moment, E is the electric field, and theta the angle between the directions of p and E.
According to this the potential energy is - pE when the dipole is aligned with the field direction, 0 when it is rotated perpendicular to the field and + pE when it's direction is opposite to that of the field.
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