Two concentric spheres of radii $R$ and $r$ have positive charges $q_1$ and $q_2$ with equal surface charge densities. What is the electric potential at their common center?

Question

$\frac{\sigma}{\varepsilon_0}(R + r)$

$\frac{\sigma}{\varepsilon_0}(R - r)$

$\frac{\sigma}{\varepsilon_0} \left( \frac{1}{R} + \frac{1}{r} \right)$

$\frac{\sigma}{\varepsilon_0} \left( \frac{R}{r} \right)$

Solution

Please login to view the detailed solution steps...

Go to DASH