Question: A wire sample (1mm in diameter by 1 m in length) of an aluminum alloy (containing 1.2% Mn) is placed in an electrical circuit. A

A wire sample (1mm in diameter by 1 m in length)

A wire sample (1mm in diameter by 1 m in length) of an aluminum alloy (containing 1.2% Mn) is placed in an electrical circuit. A voltage drop of 432 mV is measured across the length of the wire as it carries a 10 A current. Determine the resistivity of this alloy (ii) If the length of this alloy is increased to 1.5 m, predict the new resistivity. Justify your answer. (i)

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