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an iron wire with cross-section 3,7 * 10^-6 m² carries current 168 A. Find the drift velocity Vd , in units of milimeters per second , by assuming the existence of two carries per iron atom. Hint : first , calculate number density n of the charge carries.

An iron wire with cross-section 3, 7 x 10 m² carries current 168 A. Find the drift velocity V, in units of milimeters per second, by assuming the existence of two carriers per
iron atom.
Hint: First, calculate number density n of the charge carriers.
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