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

A 4.1e-6 capacitor is connected in series with a 36V battery and a 851 ohlms resistor. At t= 0 the capacitor is uncharged. At what time will the capacitor have 80% of its maximum charge?

2. Relevant equations

I = V/R

Q = CV

I = Q/t

3. The attempt at a solution

I didn't learn RC circuit much in class since my teacher ran out of time.

But anyway,

So the first thing I did is I found the current which is,

I = .0423 A

Now I'm stuck on this one.

I = Q/t I need to find t, I tried to use .0423 = Q* (.8) / t but the problem is Q is unknown. Any ideas?

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# Homework Help: Help on basic RC Circuit problem

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