Rearranging Resistance Formula: Y = Mx + C • Physics Forums
Feb 21, 2011 · The discussion focuses on rearranging the resistance formula R = (resistivity x length) / 4 (d/2)² into the linear form Y = Mx + C. Participants clarify that resistance (R) is the dependent …
Why Is Length Divided by Area in the Resistivity Formula R=P*(L/A)?
Oct 22, 2014 · Hello, I am curious why in the resistivity formula you divide the length by the area? R=P*(L/A). I cannot figure why you would not take the L*A to get volume?
Calculating the resistance from R = pl/A • Physics Forums
Jun 5, 2011 · The resistivity of copper is given as 1.7 × 10 -8 Ohm*m. The correct formula used is R = ρl/A, where the area A is calculated as π* (r 2). The final potential difference across the lead is …
Coefficient of resistance formula - Physics Forums
Sep 24, 2015 · The forum discussion centers on the coefficient of resistance formula, specifically the equation R2=R1 [1+a (T2-T1)], where R1, T1, R2, and the temperature coefficient (alpha) are …
Does Ohm's Law Equate to the Resistivity Formula R = ρ (L/A)?
Nov 11, 2025 · Ohm's Law is an interesting observation relating the voltage and current in a circuit. Not all materials obey Ohm's Law. In fact, resistance of most real materials are to a certain degree …
Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2
Nov 17, 2016 · The calculations revealed discrepancies in the expected slope, prompting discussions on the accuracy of the plotted data and the correct interpretation of the resistivity formula, R = 4pL/pi * …
How Do You Find the Temperature Coefficient of Resistivity at 0 …
Feb 28, 2006 · What would they be at 0 degrees C. Calculate the coefs for silver, copper and gold (all in table, resistivity is also in the table for each). Note that the temperature coefficient of resistivity at 20 …
How Do You Calculate Resistance in a Radial Cylinder System?
Feb 7, 2009 · Study the derivation of the resistance formula for cylindrical conductors. Explore the impact of material resistivity on electrical resistance. Learn about the applications of radial resistive …
Calculating Resistance(not at RT) using the Resistivity Formula
Jul 17, 2006 · They seek clarification on the formula R= (L/A)ρ= (L/A)ρ0 (α (T - T0)+1), specifically regarding the meanings of ρ0, α, and T0, and how to apply it to the "Constantan" alloy. Additionally, …
What Do p and l Represent in the Resistance Formula R = pl/A?
Aug 9, 2006 · The resistance formula R = pl/A defines resistance (R) in terms of resistivity (p), length (l), and cross-sectional area (A). In this equation, p represents the resistivity of a material measured in …