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On the equatorial plane of an electric dipole, the electric potential at any point is
AMaximum and negative
BZero
CEqual to the axial potential at the same distance
DMaximum and positive
Answer & Solution
Correct answer: B. Zero
For a dipole, V ∝ p·cosθ/r². On the equatorial plane θ = π/2 so cosθ = 0, hence V = 0 along the entire equatorial plane (although E is non-zero there).
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