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Physics-Electric Potential

NEET Physics Electric Potential MCQ Question

Type: MCQ-conceptual-Hard-Class 12

A dipole with dipole moment pp is placed in a uniform electric field EE. If the angle between the dipole moment and the electric field is θ\theta, what is the potential energy of the dipole?

A

−pEcos⁡θ-pE \cos \theta

B

pEcos⁡θpE \cos \theta

C

pEcos⁡θ\frac{pE}{\cos \theta}

D

pEsin⁡θpE \sin \theta

Correct Answer

Option A

Detailed Explanation

The potential energy of a dipole in a uniform electric field is given by −p⋅E-p \cdot E, where pp is the dipole moment and EE is the electric field. The dot product implies −pEcos⁡θ-pE \cos \theta.

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