Four charges -q, -q, +q and +q are placed at the corners of a square of side 2 L is shown…

Physics · Class 12 · CBSE — Electrostatic Potential & Capacitance

1. \(\frac{1}{4 \pi \varepsilon_0} \frac{2 q}{\mathrm{~L}}\left(1-\frac{1}{\sqrt{5}}\right)\)
2. \(\frac{1}{4 \pi \varepsilon_0} \frac{2 q}{L}\left(1+\frac{1}{\sqrt{5}}\right)\)
3. \(\frac{1}{4 \pi \varepsilon_0} \frac{q}{2 L}\left(1-\frac{1}{\sqrt{5}}\right)\)
4. Zero

Answer

(A) 1 4 _0 2 q ~L (1- 1 5 )

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