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Physics · Electrostatic Potential
हिन्दीThe electric potential at a point on the axial line of an electric dipole of dipole moment \( p \) at a distance \( r \) (where \( r \gg a \)) is given by \( V = \pm \frac{1}{4\pi\varepsilon_0} \frac{p}{r^2} \). If the distance \( r \) is doubled, the potential at the axial point becomes:
Correct answer · Option B
One-fourth of the original value / मूल मान का एक चौथाई
Explanation
Since potential due to a dipole varies inversely as the square of distance (\( V \propto \frac{1}{r^2} \)), doubling \( r \) reduces the potential to one-fourth.
