Concentric spherical shells#
Concentric conducting spherical shells carry charges of \(Q\) and \(-Q\) as shown in the figure. The inner shell of radius \(a\) has negligible thickness. The outer shell has an inner radius \(b\).
Find an expression for the potential difference between the shells. In your expression, use Coulomb’s constant \(k\) to represent \(1/(4\pi\varepsilon_0)\).