Question about resistance in a circuit

  • Thread starter skwz
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21
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Main Question or Discussion Point

Since:
[tex]R = \rho \frac{\ell}{A}[/tex]
When calculating resistance in a circuit and lets say there are no resistors in the circuit, does [tex]\ell[/tex] represent the length of the entire circuit (e.g. the length of the entire wire) or only the length across the battery?
 

Answers and Replies

24
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it should be the length of entire wire
 
yes, l - length of the entire wire.
 

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