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The resistance of gold wire used in circuits is usually negligible compared to the
components in the circuit, and can be ignored. For long, thin wires, this is no longer
true.
Calculate the resistance, in ohms, of a length of gold wire, 47.1 cm long, with a cross
sectional area of 1.7 mm2. The resistivity of gold is 2.35x108 Q.m.

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