Electric field outside of conducting sphere.

  • Thread starter ramses07
  • Start date
  • #1
ramses07
11
0

Homework Statement



A conducting sphere of radius 0.01 m has a charge of 1.0 × 10–9 C deposited on it. The magnitude of the electric field in N/C just outside the surface of the sphere is

Homework Equations


E=kq/r^2

EA=q/eo


The Attempt at a Solution



I tried the first equation and got 90000, but the answer is 900. I am racking my brains here trying to understand how to find the answer. Its seems simple enough, I am probably just missing a step, can anybody point to what I am doing wrong.
 

Answers and Replies

  • #2
Axiom17
70
0
Could you show your calculations so far? Then can see where you're going wrong. :smile:
 
  • #3
hikaru1221
799
0
Does the question mention the permittivity of the medium outside the sphere?
 
  • #4
Axiom17
70
0
..also I got [itex]E=90000NC^{-1}[/itex] as well. Where did you get that the answer should be [itex]E=900NC^{-1}[/itex]? Also check those values you've been given are correct (but they seem OK).
 

Suggested for: Electric field outside of conducting sphere.

Replies
11
Views
491
Replies
3
Views
422
  • Last Post
Replies
1
Views
328
  • Last Post
Replies
2
Views
286
Replies
14
Views
552
Replies
6
Views
560
Replies
7
Views
72
Replies
5
Views
473
Top