Question:medium

Two points A and B are located at distances 4 cm and 5 cm respectively from a point charge $+20\mu C$. The work done in taking a charge of $+2\mu C$ from point A to point B is

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$W_{ext} = \Delta U$. Repulsion moves charges apart naturally, so potential energy decreases. $W_{ext}$ is negative, meaning energy is output, not input. Pick the magnitude match.

Updated On: Mar 31, 2026

0.9 J
3.6 J
1.8 J
1.2 J

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The Correct Option is C

Solution and Explanation

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Two points A and B are located at distances 4 cm and 5 cm respectively from a point charge $+20\mu C$. The work done in taking a charge of $+2\mu C$ from point A to point B is

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The Correct Option is C

Solution and Explanation

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