Physics · Electrostatic Potential

Two point charges \( q_1 \) and \( q_2 \) are placed at a distance \( r \) apart. The electric potential energy of the system is given by:

1. \( \frac{1}{4\pi\varepsilon_0} \frac{q_1 q_2}{r} \)
2. \( \frac{1}{4\pi\varepsilon_0} \frac{q_1 q_2}{r^2} \)
3. \( \frac{1}{4\pi\varepsilon_0} (q_1 + q_2) r \)
4. \( \frac{1}{4\pi\varepsilon_0} \frac{q_1^2 q_2^2}{r} \)