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When you walk across a carpet during the winter you often get a shock when you touch a metal door knob. The reason is that you pick up electrons via friction between your feet and the carpet. If you pick up -97.37 microC of charge, how many electrons did you acquire ?

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This is the answer tab

The total charge can be written as

[tex]Q=-97.37*10^{-6}C[/tex]

And the charge of an individual electron is

[tex]q=-1.6*10^{-19}C[/tex]

Thus, the number of electrons is the total charge acquired, divided by the amount of charge on each individual electron. This gives us:

[tex]n=\frac{Q}{q}=\frac{-97.37*10^{-6}}{-1.6*10^{-19}}=6.085625*10^{14}[/tex]

So, we have acquired 6.085625*10^14 electrons

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