Question

An electron and a proton are brought near how does the potential energy of a system changes

Answer 1

The potential energy will get decreased when an electron and a proton are brought close to each other

Answer 2

here's the answer,

Two protons are brought towards each other. ... This is because in bringing two protons closer, work has to be done against the force of repulsion. This is stored up in the form of potential energy. However, the potential energy will decrease when a proton and an electron are brought nearer.

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