A dipole of electric dipole moment $p$ is placed in a uniform electric field of strength $E.$ If $ heta$ is the angle between positive directions of $p$ and $E,$ then the potential energy of the electric dipole is largest when $ heta$ is

Question

A dipole of electric dipole moment $p$ is placed in a uniform electric field of strength $E.$ If $	heta$ is the angle between positive directions of $p$ and $E,$ then the potential energy of the electric dipole is largest when $	heta$ is

Dr. Abubacker · Accepted Answer

(c) The potential energy of an electric dipole in a uniform electric field is
$U = - \overrightarrow{p}.\overrightarrow{E}$
$U = - pE\cos	heta$
For $U$ to be maximum
$\cos	heta = - 1 \Rightarrow 	heta = \pi$

Q. A dipole of electric dipole moment $p$ is placed in a uniform electric field of strength $E.$ If $\theta$ is the angle between positive directions of $p$ and $E,$ then the potential energy of the electric dipole is largest when $\theta$ is

Explanation

Reviewed by Dr. Abubacker

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