Question about resistance in a circuit

AI Thread Summary
In calculating resistance in a circuit using the formula R = ρ(ℓ/A), ℓ represents the length of the entire wire, not just the length across the battery. This means that when there are no resistors present, the total resistance is determined by the full length of the conductive material. The discussion confirms that the entire wire length is crucial for accurate resistance calculations. Understanding this concept is essential for analyzing circuit behavior effectively. Accurate resistance calculations depend on considering the entire wire length.
skwz
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Since:
R = \rho \frac{\ell}{A}
When calculating resistance in a circuit and let's say there are no resistors in the circuit, does \ell 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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