23Aug/09Off
Ohm Min
Ohm Min
How many electrons pass a given point in the circuit in 16 min? Please help, due midnight!?
This is part of a two part problem. So the first problem: the potential difference in a simple circuit is 3V and resistance is 15 ohms. What current I flows in the circuit? Answer in units of A. My answer was 0.2 by dividing 3/15.
So the problem I need help with is: How many electrons pass a given point in the circuit in 16 min?
Your answer for part a is correct, 0.2 A
Now for the second part you need to know that current is defined as
I = Q/t where Q is the charge in coulombs. For every ampere, A, one coulomb of electric charge flows per second. There are 6.242E18 electrons in one coulomb of electric charge.
That should help you 
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