Electrostatics Question 290

Question: An electric dipole of moment p is placed in the position of stable equilibrium in uniform electric field of intensity E . It is rotated through an angle θ from the initial position. The potential energy of electric dipole in the final position is [MP PET 1993]

Options:

A) pEcos⁡θ

B) pEsin⁡θ

C) pE(1−cos⁡θ)

D) −pEcos⁡θ

Show Answer

Answer:

Correct Answer: D

Solution:

Potential energy of dipole in electric field U=−PEcos⁡θ ; where q is the angle between electric field and dipole.

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