How many electrons must be removed from an electrically neutral silver dollar to give it a charge of +2.0 µC?

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How many electrons must be removed from an electrically neutral silver dollar to give it a charge of +2.0 µC?

2007-02-27 15:06:05 · 3 answers · asked by Javier B 1 in Science & Mathematics ➔ Physics

3 answers

This one is not all that challenging. Each electron has a charge of -1.602 x 10^-19 C. You want a charge of +2.0 x 10^-6 C, so you must remove enough electrons to equate to a charge of -2.0 x 10^-6 C.

-2.0 x 10^-6 C / (-1.602 x 10^-19 C / electron) = 1.3 x 10^13 electrons

2007-02-27 16:22:47 · answer #1 · answered by msi_cord 7 · 0⤊ 0⤋

2007-02-27 15:09:02 · answer #2 · answered by pdaj 2 · 0⤊ 0⤋

electron charge = 1.60217646 × 10-19 coulombs
2uC/1.60217646 × 10-19 coulombs= answer

2007-02-27 16:21:44 · answer #3 · answered by meg 7 · 0⤊ 0⤋