Electric field conductor question

  • #1
Please help me.

Homework Statement


Consider a metal sphere of radius R that has a total charge of Q. What is the force on one hemisphere by the other?



Homework Equations



F=E/q

The Attempt at a Solution


I thought the Electric field inside a conductor should be 0, therefore the force is also 0?
But it should not be this simple could somebody explain it to me.

Homework Statement





Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
199
15
electric field inside the conductor is zero, yes. That means total net force should be zero as well. but the force asked is that by the hemisphere (the part of the same sphere).
Net force is zero because both hemisphere exert equal but opposite force.

You would need calculus to solve the problem(calculate the value of force).
if the sphere is hollow, you can follow this post by hikaru1221

https://www.physicsforums.com/showpost.php?p=2913313&postcount=11
 

Related Threads on Electric field conductor question

Replies
2
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
18
Views
46K
  • Last Post
Replies
5
Views
11K
Replies
4
Views
660
  • Last Post
Replies
1
Views
516
  • Last Post
Replies
2
Views
1K
Replies
4
Views
7K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
11
Views
2K
Top