CUET · PHYSICS · PYQ PAPER 2023

Electric potential on an equitorial plane of an electric dipole is taken as zero. This is based on

A Superposition principle followed for electric charge potentials.
B Net charge on electric dipole is zero.
C Electric potential for electric dipole exists along axial line only.
D Electric potential due to a dipole has symmetrical distribution.

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Answer & Solution

Correct Answer

(A) Superposition principle followed for electric charge potentials.

Step-by-step Solution

Detailed explanation

An electric dipole consists of two equal and opposite charges, \(+q\) and \(-q\). On the equatorial plane, every point is at an equal distance from both the positive and negative charges. The positive potential from \(+q\) and the negative potential from \(-q\) are equal in…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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