Two wires share the same length and cross-sectional area — one made of copper, t

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1. Two wires share the same length and cross-sectional area — one made of copper, the other of aluminium. Copper’s electrical conductivity is higher than aluminium’s. Which statement is correct?

The copper wire will have higher resistance than the aluminium wire

The aluminium wire will have higher resistance than the copper wire

Both wires will have exactly the same resistance

If the same current flows through both, they’ll dissipate exactly the same power

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Higher conductivity means lower resistivity, and lower resistivity means lower resistance for wires of identical size. So the less-conductive aluminium wire ends up with the higher resistance.