• Support PF! Buy your school textbooks, materials and every day products Here!

Charge flow of grounded sphere?

  • #1

Homework Statement


A conducting spherical shell , which has no net charge, has a charged object inside the shell somewhere with charge=+7 Coulombs.

Later the conducting spherical shell is connected to ground and whatever charge flows does so and a new equilibrium charge on the shell is reached. The shell is now again disconnected from ground. What now is the net total charge, if any, on the spherical shell?


The Attempt at a Solution



OK initially, before grounding, the shell would have a net charge of 0, a charge of +7 coulombs on its outer surface and a charge of -7 coulombs on its inner surface, right?

Once it's grounded... electrons will flow from the ground to the shell (because the outer surface is +7 so positive) , then, once it is removed, the shell will now have a net charge of -7 coulombs

Is this right?
 
Last edited:

Answers and Replies

  • #2
Doc Al
Mentor
44,945
1,206
Perfectly correct.
 
  • #3
thanks!
 

Related Threads on Charge flow of grounded sphere?

  • Last Post
Replies
5
Views
130
Replies
1
Views
1K
Replies
3
Views
1K
Replies
7
Views
10K
  • Last Post
Replies
11
Views
3K
Replies
0
Views
3K
Replies
5
Views
3K
  • Last Post
Replies
20
Views
5K
Replies
4
Views
116
Replies
5
Views
1K
Top