A point charge q produces an electric potential V at a distance r in vacuum

PHYSICS · Single correct · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance

Problem

A point charge q produces an electric potential V at a distance r in vacuum. Which one of the following changes to q and r will keep the potential exactly the same? (a) Double qq while keeping rr unchanged (b) Quadruple qq and double rr (c) Double both qq and rr (d) Keep qq unchanged and halve rr

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