Question
Asked Oct 7, 2019
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Electrons flow through a 3.0-mm-diameter aluminum wire at 1.8×10−4 m/s. How many electrons move through a cross section of the wire each day?

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Expert Answer

Step 1

The charge flowing through cross section area A is.

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nis the electron density of Aluminium e is the charge of electron Ais the area of cross section is the velocity tis the time QneAv,t

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Step 2

Substitute the corresponding v...

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n 6x10 m e 1.6x1019 C яа Q =neAvt -,d 3 x 10 A= m 4 vo=1.8x10 m/s 86400s 86400s -1.8 x 10-4 m/s x1dayx 6x10 mx 1.6 x 10-1 Cx-14 x3x10 m X 1day 4 =10.55 x10 C

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Current Electricity

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