# Getting different answers for number of electrons in 1 amp? [duplicate]

I was looking up the number of electrons in a current with 1a and I keep on getting different answers. Some websites put the number at 6.24, some at 6.25 and others at 6.28 (all * 10^18)

Is there some ambiguity in regards to this question? Seems strange to get slightly different numbers.

• The 6.25 number is just incorrectly rounded, and I'd guess the 6.28 number originated from either someone mixing up the 8 from 10¹⁸, or from a badly scanned/OCR'd book where the 3 got misread as an 8. If you're asking for the number of electrons in an amp (which doesn't actually make sense), rather than in a coulomb (which is probably what you meant), I wouldn't expect to find very good answers. Apr 8 at 15:46
• 6.24e18 and 6.25e18 are likely rounding differences for the charge of an electron in the initial equation. i.e. using 1.60217663e-19 vs 1.6e-19 Apr 8 at 15:48
• There are any number of electrons in an ampere. Depends on how long that amp is flowing. Look up coulomb, instead. Mind dimensions. Apr 8 at 16:40