Two protons are brought towards each other. Will the potential energy of the system decrease or increase? If a proton and an electron be brought nearer, then?

Explanation

To solve the question regarding the potential energy changes when two protons are brought closer together and when a proton and an electron are brought closer together, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Charges**:
- Protons are positively charged particles, while electrons are negatively charged.
- The interaction between like charges (protons with protons) is repulsive, while the interaction between opposite charges (proton with electron) is attractive.

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