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

Wires and potential difference

  • Thread starter maccha
  • Start date
  • #1
53
0
Recently in physics I've learned that equipotential surfaces are always conductors in electrostatic equilibrium.. so no moving charges. I'm a little confused, then, of how a wire carrying current is considered an equipotential? If charges are moving how can the potential be constant?
 

Answers and Replies

  • #2
rl.bhat
Homework Helper
4,433
7
Recently in physics I've learned that equipotential surfaces are always conductors in electrostatic equilibrium.. so no moving charges. I'm a little confused, then, of how a wire carrying current is considered an equipotential? If charges are moving how can the potential be constant?
The charges always move from higher potential to the lower potential. On the equipotential surface, at every point the potential is the same. so the charges are not moving.
In a wire current flows only when there is a potential difference at two ends of the wire.
 

Related Threads on Wires and potential difference

Replies
6
Views
731
Replies
6
Views
1K
Replies
2
Views
6K
Replies
3
Views
3K
Replies
2
Views
3K
  • Last Post
Replies
1
Views
2K
Replies
10
Views
386
Replies
3
Views
2K
Replies
5
Views
11K
Replies
7
Views
4K
Top