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Physics · Electrostatic Potential
हिन्दीA test charge \( q \) is moved slowly from a point R to a point P against a repulsive electrostatic force due to a source charge \( Q > 0 \). If the work done by the external force is \( W_{RP} \), the potential energy difference \( \Delta U = U_P - U_R \) is given by:
Correct answer · Option 1
\( W_{RP} \)
Explanation
By definition, the potential energy difference between two points is equal to the work done by an external force in moving the charge from R to P without acceleration, hence \( \Delta U = U_P - U_R = W_{RP} \).
