All Problems

Electric Capacitance, Energy of an Electric Field

Problem 3.111

Determine the capacitance of a system consisting of a metal ball of radius \(a\) and an infinite conducting plane separated from the centre of the ball by the distance \(l\) if \(l \gg a\).

Reveal Answer
C4πε0aC \approx 4 \pi \varepsilon_{0} a