19.1.3 Physics Help

The density of mobile electrons in copper metal is 8.4e28 m-3. Suppose that i = 3.4e18 electrons/s are drifting through a copper wire. (This is a typical value for asimple circuit.) The diameter of the wire is 0.6 mm. In this case, about how many minutes would it take for a single electron in the electron sea to drift from one endto the other end of a wire 40 cm long?

________ minutes


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