A dipole of electric dipole moment P is placed in an electric field of strength E. The angle between P and E for which the potential energy of the electric dipole is maximum, is (a) cos ⁻¹(1) (b) cos ⁻¹(-1) (c) sin ⁻¹(1) (d) sin ⁻¹(-1)

Answer: (b). U = -pEcos θ is maximum when cos θ = -1. So θ = cos ⁻¹(-1) = 180°. So the answer is (b) cos ⁻¹(-1).

A dipole of electric dipole moment P is placed in an electric field… | MHT CET 2026 (19 May, Shift 2)

Q2MHT CET 2026 · 19 MAY · SHIFT 2Easy

Electric Dipole

A dipole of electric dipole moment $\vec{P}$ is placed in an electric field of strength $\vec{E}$ . The angle between $\vec{P}$ and $\vec{E}$ for which the potential energy of the electric dipole is maximum, is

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Answer: (b)

$U = -pE\cos\theta$ is maximum when $\cos\theta = -1$ .
So $\theta = \cos^{-1}(-1) = 180^\circ$ .
So the answer is (b) $\cos^{-1}(-1)$ .

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Electric Dipole question from MHT CET 2026 (19 May, Shift 2)

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