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Physics · Electrostatic Potential
हिन्दीA charge \( q \) is brought from infinity to a point \( \mathbf{r} \) in an external electrostatic potential \( V(\mathbf{r}) \). The electrostatic potential energy of the charge in this external field is given by:
Correct answer · Option 4
\( q \, V(\mathbf{r}) \)
Explanation
Work done in bringing charge q from infinity to position r in an external field is stored as potential energy, U = q V(r).
