Question about resistance in a circuit

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    Circuit Resistance
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SUMMARY

The discussion clarifies the formula for calculating resistance in a circuit, specifically R = ρ (ℓ/A). It establishes that in the absence of resistors, ℓ represents the length of the entire wire, not just the length across the battery. This understanding is crucial for accurate resistance calculations in electrical circuits.

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skwz
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Since:
[tex]R = \rho \frac{\ell}{A}[/tex]
When calculating resistance in a circuit and let's 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?
 
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it should be the length of entire wire
 
yes, l - length of the entire wire.
 

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