Electric Circuits: Current & Charge in 30 Secs

[smatt_31]

Homework Statement

If the current in an electric conductor is 2.4A, how many coulombs of charge pass any point in a 30 second interval?

Homework Equations

A = C/s

The Attempt at a Solution

I just want to make sure that I am doing this right. If my current is 2.4 A then I can write this as 2.4 C/s and then multiply by the 30 second interval.
2.4 X 30 = 72 Coulombs is this the correct method?
Thanks

 

[Ouabache]

I would be careful how you state your expression. I think you meant 1 A = 1 C/s. Is that right? The rest of your thought process looks correct to me.

 

[piercas]

for your help!

Yes, your method is correct. The equation A = C/s (where A is current in amperes, C is charge in coulombs, and s is time in seconds) can be rearranged to solve for C, which gives you C = A*s. In this case, A = 2.4 amps and s = 30 seconds, so C = 2.4 A * 30 s = 72 coulombs. This means that 72 coulombs of charge have passed through any point in the conductor in a 30 second interval. Great job!