# Impedance Networks

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Each of the networks shown below is driven in steady-state by the sinusoidal input voltage/current source depicted. Use the impedance method to determine i_R, the current through the resistor R.

It might be helpful in this (and all sorts of circuits like this) to remember the acronym CIVIL, which stands for:
In a **C**apacitor, current **I** leads voltage **V**. and in an inductor **L**, **V** voltage leads current **I**!!! This of course won't give you numerical answers that needed here, but should help you in what to expect. "Ah a capacitive circuit! I'd expect current to have a phase lead on voltage! That makes sense!"

If you don't like CIVIL, there's also ELI the ICE man. In inductors, E leads I...in Capacitors I leads E.

### Circuit A

Assume R=470\Omega, C_1=47\mu F, C_2=33\mu F, and V=5 V.

### Circuit B

For this circuit asusme R=100\Omega, L_1=100mH and I=50mA.