Why in an electric circuit with only a generator the resistance R=infinity?

In summary, the reason an electric circuit with only a generator has an infinite resistance is because without a completed circuit, there is no current flowing. This is simplified for teaching purposes, as in reality the resistance is very high but not truly infinite. A diagram would be helpful in understanding the question more clearly.
  • #1
62
9
Why in an electric circuit with only a generator the resistance R=infinity?

[Newbie's post edited by a Mentor to delete extraneous embellishment]
 
Last edited by a moderator:
Physics news on Phys.org
  • #2
Because you don't have a completed circuit. Just an open. Of course, in reality the resistance isn't infinite, just very, very high. But we call it infinite to simplify things when teaching things to students.

Also, there's no need to throw half a dozen question marks into a sentence. One will suffice.
 
  • #3
samy4408 said:
Why in an electric circuit with only a generator the resistance R=infinity?

[Newbie's post edited by a Mentor to delete extraneous embellishment]

Because the current is zero.
 
Last edited by a moderator:
  • #4
samy4408 said:
Why in an electric circuit with only a generator the resistance R=infinity?
What's "a generator" in your question? Can you post a schematic?
 
  • #5
As worded, the question implies to me zero resistance, not infinite. So yeah, we need a diagram.
 

Suggested for: Why in an electric circuit with only a generator the resistance R=infinity?

Replies
5
Views
1K
Replies
9
Views
480
Replies
7
Views
2K
Replies
16
Views
4K
Replies
22
Views
3K
Replies
3
Views
1K
Back
Top