•8 A small but measurable current of 1.2 × 10-10 A exists in a cop- per wire whose diameter is 2.5 mm. The number of charge carriers per unit volume is 8.49 × 1028 m-3. Assuming the current is uniform, calculate the (a) current density and (b) electron drift speed.
•8 A small but measurable current of 1.2 × 10-10 A exists in a cop- per wire whose diameter is 2.5 mm. The number of charge carriers per unit volume is 8.49 × 1028 m-3. Assuming the current is uniform, calculate the (a) current density and (b) electron drift speed.
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Transcribed Image Text:•8 A small but measurable current of 1.2 × 10-10 A exists in a cop-
per wire whose diameter is 2.5 mm. The number of charge carriers
per unit volume is 8.49 × 1028 m-3. Assuming the current is uniform,
calculate the (a) current density and (b) electron drift speed.
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