What is the resistance of a rectangular gold wire that is 0.5 cm long, 10 micrometers wide, and 2 micrometers in thickness? The resistivity of gold is 22 x 10-9 ohm-m.
What will be an ideal response?
A = WH = (2 micrometers)(10 micrometers) = 20 x 10-12 m2
R = rho x L/A = (22 x 10-9W - m) x (0.005 cm /(20 x 10-12 m2) = 5.5W
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