The resistance in a wire (circular cross section) is given by the formula: R =
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Question:
The resistance in a wire (circular cross section) is given by the formula:
R = ϱ × L/A R = ϱ × LA
Where R is the resistance in ohms (Ω) and ϱ is the resistivity of the material (constant for a material) in Ωm. Find the resistance and it's uncertainty in a copper wire of length 50 cm and radius 10 cm. The resistivity of copper is 2 × 10−6 Ωm 2 × 10–6 Ωm and the uncertainty of L and r measurement is WL = 0.5 cm & r = 0.1cm.
Related Book For
University Physics With Modern Physics
ISBN: 978-0073513881
2nd edition
Authors: Wolfgang Bauer, Gary Westfall
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