# Basic Electricity Question - Potential Electric

1. Homework Statement

Question: a plate carries a charge of -3.0 uC, while a rod carries a charge of +2.0 uC. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge?

3. The Attempt at a Solution

N= q/e = -2.0e-6/-1.6e-19 = 1.25e13 electrons transferred

something doesn't seem right about this problem. the prof didnt mark this wrong, but he marked -2.0e-6 C wrong? anyone with the fix?

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Galileo
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If you transfer 2uC from the rod to the plate, what will be the charges on both objects?

If you transfer 2uC from the rod to the plate, what will be the charges on both objects?
-3.0 uC and +2.0 uC ...when you sum them up you get -1.0 uC? each with -0.5 uC? then, 2.5 uC when you subtract from 3.0 uC?

find how many electrons in 2.5 uC? is that how much is transferred?

too many questions!!!!

think thats right, eg taking away from one and giveth to the other;
-3-deltaC=2+deltaC so -2.5uC

^^that's it right? just calculate electrons for 2.5 uC and that's that right?

You're good best I can tell, but technically its -2.5uC, some profs might not care, others most definitely will.

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