Question

A 10 ohm resistor and 10 microfarad capacitor are attached in series to a 10 volt DC supply. If the current i(0)=1 ampere, what is the current after 0.1 milliseconds (0.0001 seconds)? Round in the thousandths place.

Answer 1

http://en.wikipedia.org/wiki/Capacitor..........here is the calculation may help u

Answer 2

The equation you're looking for, I think, is this one.\[I=I_0e^{-t/RC}\] Sub the values in:\[I=1e^{-0.0001 \div (10 \times 10 \times 10 ^{-6})}\]
\[I = e^{-1}\]
\[I_{t=0.0001}\approx 0.3679 A\]