Finding the radius of a charged metal sphere

  • Thread starter Jimmy25
  • Start date
  • #1
72
0

Homework Statement



A metal sphere centered at the origin has a surface charge density that has a magnitude of 24.6 nC/m2 and a radius less than 2.00 m. At a distance of 2.00 m from the origin, the electric potential is 540 V and the electric field strength is 270 V/m. (Assume the potential is zero very far from the sphere.)

1. What is the radius of the sphere?
2. Is the charge on the sphere positive or negative?

Homework Equations





The Attempt at a Solution



I found the radius as 0.623 m but how do I determine the sign of the charge on the sphere?
 
Last edited:

Answers and Replies

  • #2
48
0
shouldn't the electric field tell you the charge of the particle creating it
 

Related Threads on Finding the radius of a charged metal sphere

Replies
5
Views
5K
  • Last Post
Replies
7
Views
585
Replies
1
Views
225
  • Last Post
Replies
6
Views
6K
Replies
2
Views
8K
Replies
2
Views
14K
  • Last Post
Replies
1
Views
4K
Replies
0
Views
6K
  • Last Post
Replies
4
Views
403
Top