Practice portal › Electric Potential and Capacitance › Electrostatic Potential Energy
Asked in CBSE AIPMT 1999 · Energy of a system of charges
For two electrons, U=1/(4πε₀)((-e)(-e))/r=(e²)/(4πε₀ r), which is positive.
As r decreases, U grows.
Physically, like charges repel, so an external agent does positive work to bring them together, and that work is stored as potential energy.
The potential energy increases.
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