(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

If an electroscope has a positive charge of 7.5 x 10[tex]^{-11}[/tex]C, how many electrons have been removed from the electroscope, if it was originally neutral?

(Answer: 4.7 x 10[tex]^{8}[/tex])

2. Relevant equations

I don't know :shy:

3. The attempt at a solution

Guys I seriously am clueless with this question. I understand basic electricity a little, like circuits, but I don't even know where to start with this. I have all formulas required, but I don't know which one to use, and my exam is tomorrow :uhh:

There are also some other questions which I'll probably post later, I'm really stuck on this, and your help is appreciated... a lot!

Thanks

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Electricity - Charges

**Physics Forums | Science Articles, Homework Help, Discussion**