A 2.0 m long copper wire (resistivity ) has a diameter of 1.5 mm

PHYSICS · Subjective · A Level · Physics · Electricity · Electricity

Problem

A 2.0 m long copper wire (resistivity

1.7\times10^{-8}\,\Omega\!\cdot\!\text{m}

) has a diameter of 1.5 mm. Calculate the current that flows when the wire is connected across a 9.0 V ideal battery.

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