Four point charges Q each, are held at the four corners of a square of side l . The…
Physics · Class 12 · CBSE — Electrostatic Potential & Capacitance
Four point charges Q each, are held at the four corners of a square of side \(l\) . The amount of work done in bringing a charge Q from infinity to the centre of the square will be:
- \(\frac{{Q}^{2}}{\pi \varepsilon_{0} l}\)
- \(\frac{\sqrt{2} Q^{2}}{\pi \varepsilon_{0} l}\)
- \(\frac{{Q}^{2}}{2 \pi \varepsilon_{0} l}\)
- Zero
Answer
(D) Zero
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