"The number density of free electrons in a copper conductor is 8.5 × 1028 m–3 .How long does an electron take to drift from one end of a wire 3 m long, to its other end? The area of crosssection of the wire is 2.0 ×10–6 m2 and it is carrying a current of 3.0 A."
Added by Cooper C.
Step 1
0 A), \(n\) is the number density of free electrons (8.5 × 10^28 m^-3), \(A\) is the cross-sectional area of the wire (2.0 × 10^-6 m^2), and \(e\) is the charge of an electron. Show more…
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