A negatively charged balloon has 4.1 µC of charge. How many excess electrons are on this balloon?
The elemental charge is 1.6 × 10^−19 C.
The elemental charge is 1.6 × 10^−19 C.
billrussell42
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already asked and answered, with slightly diff numbers
5.4 µC / (1.6 × 10^−19 C/electron) = 2.84e13 electrons
Amy
Let`s phrase that slightly differently and see if it becomes more obvious.
A balloon has 4.1 µC of charge. One electron has 1.6 × 10^−19 C of charge. How many electrons are on the balloon?
(This of course is the wrong way to think about it: the word "excess" is there for a reason. But for the sake of the math you can ignore all balanced charges for now.)