- #1

Davidllerenav

- 424

- 14

- Homework Statement
- A conducting spherical shell has charge Q and radius R1. A larger

concentric conducting spherical shell has charge −Q and radius

R2. If the outer shell is grounded, explain why nothing happens to

the charge on it. If instead the inner shell is grounded, find its final

charge.

- Relevant Equations
- ##V=-\int_\infty ^a \vec E\cdot d\vec l##

Hi! I need help with this problem.

When the outer shell is grouded, its potential goes to zero, ##V_2=0## and so does it charge, right? ##-Q=0##. So the field would be the one produced by the inner shell ##E=\frac{Q}{4\pi\epsilon_0 R_1^2}##.

When the inner shell is grounded, I think that something similar would happen, ##V_1=0## and ##Q=0##, but I think it is wrong, because the problem asks me to find the final charge of the inner shell. I'm pretty confused about what happens when a conductor is grounded.