- #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.