The smallest unit of charge is −1.6×10−19 C, which is the charge in coulombs of a single electron.

Question

Robert Millikan was able to measure the charge on small droplets of oil by suspending them between a pair of electrically charged plates.

Which of the values are possible charges of those oil droplets?

-9.4 x 10^-19 C

-8.0 x 10^-19 C

-5.6 x10^-19 C

-3.2 x 10^-19 C

-4.8 x 10^-19 C

-1.2 x 10^-19 C

Answer 1

Kailee

As the smallest possible unit of charge is the charge on the electron, and the particles were charged by gaining electron (s) all the possible charges must be a multiple of an electron charge.

So you just have to check this.

Mike