There are four-point charges +q,-q,+q and -q placed at the corners A, B, C, and D…
Physics · Class 12 · CBSE — Electrostatic Potential & Capacitance
There are four-point charges +q,-q,+q and -q placed at the corners A, B, C, and D respectively of a square of side a. The potential energy of the system is \(\frac{1}{4 \pi \varepsilon_{0}}\) times:
- \(\frac{q^{2}}{a}(-4+\sqrt{2})\)
- \(\frac{q^{2}}{2 a}(-4+\sqrt{2})\)
- \(\frac{4 q^{2}}{a}\)
- \(\frac{-4 \sqrt{2} q^{2}}{a}\)
Answer
(B) q^ 2 2 a (-4+ 2 )
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