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# + & - coulomb (tiny question) watch

1. to get to the point, how is a +/- charge of a coulomb (also a voltage, although I think they would agree with eachother) in relation to an excess electron?
for example with 1000 excess electrons or ANY number of excess, would the C value be + or -??

"1 electron charge = 1.6 * 10^(-19) C"
looks like coulomb charge = + with excess electrons...
but "The charge on a pith ball is -2.0x10^(-14) C. Therefore there are 125,000 excess electrons."
looks like coulomb charge = - with excess electrons...
both examples were taken from my course. I'm binging tonight, I'd like to get done my unit by 8 am.
thanks a ton! I think my textbook is paradoxal, one of the examples are wrong.
2. sorry guys. wont expect to find bright intuitivness at this time of night
3. (Original post by emerset)
to get to the point, how is a +/- charge of a coulomb (also a voltage, although I think they would agree with eachother) in relation to an excess electron?
for example with 1000 excess electrons or ANY number of excess, would the C value be + or -??

&quot;1 electron charge = 1.6 * 10^(-19) C&quot;
looks like coulomb charge = + with excess electrons...
but &quot;The charge on a pith ball is -2.0x10^(-14) C. Therefore there are 125,000 excess electrons.&quot;
looks like coulomb charge = - with excess electrons...
both examples were taken from my course. I'm binging tonight, I'd like to get done my unit by 8 am.
thanks a ton! I think my textbook is paradoxal, one of the examples are wrong.
OK basically,

1 electron charge = - 1.6 * 10^(-19) C [you forgot the neg. sign here]

so for example, if my pithball has a charge of - 1.6 * 10^(-19) C, then I have one electron excess.

Therefore, if my pithball has a charge of - 3.2 * 10^(-19) C, then I have two electrons excess.

But..if my pithball has a charge of + 1.6 * 10^(-19) C, then I have one electron missing.

so, if my pithball has a charge of + 3.2 * 10^(-19) C, then I have two electrons missing.

SO......

+ Charge = electron(s) missing
- Charge = electron(s) extra

Hope that helps.
4. (Original post by emerset)
sorry guys. wont expect to find bright intuitivness at this time of night
Nope, you can expect it LOL!!!
5. (Original post by CoolDude)
Nope, you can expect it LOL!!!
I love it, you can count on TSR, more faithful and timely and mathematically impeccable (while morally unaccountable) than any program in the real world
6. (Original post by emerset)
I love it, you can count on TSR, more faithful and timely and mathematically impeccable (while morally unaccountable) than any program in the real world
lol! oK, GOOD LUCK with your assignment!

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