060 250 20 080 250 25 100 250 the resistance

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Unformatted text preview: of wire. A, is the cross sectional area of the wire. € When the temperature of a metal changes so does its resistivity. € R = R0 [1 + α (T − T0 )] Where R0 is the resistance at T0 Temperature. € Analysis and Discussion Part 1 Volt (V) Current(I) A Resistance(R) Ω 5 .020 250 10 .040 250 15 .060 250 20 .080 250 25 .100 250 The resistance determined from the Voltage vs. Current graph on the last page is determined by the slope and came out to be 0.25 which matches with the above calculated Resistance. Error propagation: ρ= ∂A ∂ρ ∂R ∂ρ ∂L ∂ρ € δρ = ρ € RA L R = = 4% L A = = 2% L RA = − 2 = 1% L ⎡ྎ ⎤ྏ 2 ⎡ྎ ⎤ྏ 2 ⎡ྎ ⎤ྏ 2 ⎢ྎ...
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