Procedure This is a combination circuit driven by a single ac source. The impedances can be resistive and/or reactive. **Step 1**--Prepare the equation for the total impedance of the circuit. Z_{T} = (Z_{1} + Z_{2}) || Z_{3} **Step 2**--Apply Ohm's Law to determine the total current. I_{T} = V_{T} / Z_{T} **Step 3**--Show that the voltage across Z_{3} is equal to the source voltage. V_{Z3} = V_{T} **Step4**--Apply Ohm's Law to show the current for Z_{3}. I_{Z3} = V_{Z3} / Z_{3} **Step 5-**-Use Kirchhoff's current law to determine the current through the series branch consisting of Z_{1} and Z_{2}. I_{Z1,2} = I_{T} – I_{Z3} **Step 6**--Show expressions for current and voltage for Z_{1} and _{Z2} - I
_{Z1} = I_{Z1,2} - V
_{Z1} = I_{Z1} * Z_{1} -
- I
_{Z2} = I_{Z1} - V
_{Z2} = I_{Z2} * Z_{2} **Check the results:** V_{Z1} + V_{Z2} = V_{T} |