# An 18 gauge copper wire (diameter 1.02 mm) carries a current with a current density of 2.90×10^6 A/m2. The density of free electrons for copper is 8.5×10^28 electrons per cubic meter.Calculate the current in the wire.Express your answer with the appropriate units.Calculate the magnitude of the drift velocity of electrons in the wire.Express your answer with the appropriate units.

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An 18 gauge copper wire (diameter 1.02 mm) carries a current with a current density of 2.90×10^6 A/m2. The density of free electrons for copper is 8.5×10^28 electrons per cubic meter.

Calculate the current in the wire.
Calculate the magnitude of the drift velocity of electrons in the wire.
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Step 1

The equation for the current in the wire is given by

Step 2

Putting the equatio...

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