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

A balloon, initially neutral, is rubbed with fur until it acquires a net charge of -0.60nC. (a) Assuming that only electrons are transferred, were electrons removed from the balloon or added to it? (b) how many electrons were transferred?

Net Charge = Q = -0.60 nC

2. Relevant equations

Electron Charge = qe = -1.602 x 10^-19 C

*meaning the Charge in 1 Electron = qe

1 nC = 10^-9 C

3. The attempt at a solution

(a) HELPI'm confused in problem a. My book says it is added but it doesn't have any explanation. :( I want to know when electrons are removed or added.

(b)I tried this but I'm not sure if it is correct.

- I converted nC to C for the given net charge:

Q = (-0.60 nC)(10^-9C / 1 nC) =-6 x 10^-10 Cor-6 EXP -10 C

-I get the numbers of transferred electrons through this:

No. of Electrons = (Q)(1 electron/qe)

= (-6 EXP -10 C)(1 electron/-1.602 x 10^-19 C)*cancel C unit=3.75 x 10^9 electronor3.75 EXP 9 electron

is this correct? i'm confused because my classmates' answer is different compare to me.

and by the way, this one doesn't have any relation with this problem, what does this mean:

1.0-g

what is -g? It's not a variable. It is just given as it is. It also belong in the topic of Electrical Conductors and Insulators.

Please help.

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# Homework Help: Electrical Conductors and Insulators, help

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