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Physics · Electrostatic Potential
हिन्दीAn electric dipole of moment \( \mathbf{p} \) is aligned at an angle \( \theta \) with a uniform electric field \( \mathbf{E} \). The work done by an external agent in turning the dipole from \( \theta_0 \) to \( \theta \) at infinitesimal angular speed is:
Correct answer · Option 1
\( pE(\cos\theta_0 - \cos\theta) \)
Explanation
W = \int_{\theta_0}^{\theta} p E \sin\theta' d\theta' = p E (\cos\theta_0 - \cos\theta).
