tsl136 - Variable cross section • Cross-sectional profile...

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Calculating the Resistance of a Wire Uniform cross section Length of wire: L Area of cross section: A Resistivity of material: ρ Current density: J = E ρ [A / m 2 ] Current: I = JA [A] Voltage: V = EL [V] Resistance: R V I = ρL A [Ω]
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Unformatted text preview: Variable cross section • Cross-sectional profile: A ( x ) • Resistance of slice: dR = ρdx A ( x ) • Resistance of wire: R = ρ Z L dx A ( x ) dx x x L A tsl136 – p.1/1...
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This note was uploaded on 04/30/2008 for the course PHYS 204 taught by Professor Andrevantonder during the Spring '07 term at Rhode Island.

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