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

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• samy4408
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.

samy4408

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

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

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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.

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.

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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?

As worded, the question implies to me zero resistance, not infinite. So yeah, we need a diagram.