An object has an excess charge of -1.92*10^-7 C . How many excess electrons does it have?

1 Answer
May 30, 2018

Approximately #1.2*10^12# electrons.

Explanation:

This object has a charge of #-1.92*10^-7 \ "C"#.

Remember that electrons #(e^-)# have a charge of #-1.602*10^-19 \ "C"#. So here, there exist:

#(-1.92*10^-7color(red)cancelcolor(black)"C")/(-1.602*10^-19color(red)cancelcolor(black)"C""/"e^-)~~1.2*10^12 \ e^-#