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Question: Answered & Verified by Expert
An electric dipole when placed in a uniform electric field $\boldsymbol{E}$ will have minimum potential energy, if the positive direction of dipole moment makes the following angle with $\boldsymbol{E}$
PhysicsElectrostaticsJEE Main
Options:
  • A $\pi$
  • B $\pi / 2$
  • C Zero
  • D $3 \pi / 2$
Solution:
2802 Upvotes Verified Answer
The correct answer is: Zero
Potential energy $=-p E \cos \theta$
When $\theta=0$. Potential energy $=-p E$ (minimum)

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