When one electron is taken towards the other electron, then the electric potential energy of the system
AIPMT 1993,AIPMT 1999, Easy
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(b) Potential energy of the system will be given by $ = \frac{{( - e)\,( - e)}}{{4\pi {\varepsilon _0}r}} = \frac{{{e^2}}}{{4\pi {\varepsilon _0}r}}$
As $r$ decreases, potential energy increases.
As $r$ decreases, potential energy increases.
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