SOLUTION: The impedance in a circuit is the measure of how much a circuit impedes (hinders) the flow of current through it. The impedance of a resistor is Z[1]=3+15i ohms and the impedance o

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Question 751331: The impedance in a circuit is the measure of how much a circuit impedes (hinders) the flow of current through it. The impedance of a resistor is Z[1]=3+15i ohms and the impedance of another resistor is Z[2]=4+6i ohms. When the twp resistors are connected in parallel, the total impedance is given by
Z[r]= Z[1]·Z[2]/Z[1]+Z[2]

Find the total impedance
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The impedance in a circuit is the measure of how much a circuit impedes (hinders) the flow of current through it. The impedance of a resistor is Z[1]=3+15i ohms and the impedance of another resistor is Z[2]=4+6i ohms. When the twp resistors are connected in parallel, the total impedance is given by
Z[r]= {Z[1]·Z[2]}/{Z[1]+Z[2]}
---
z(r) = [4+6i+3+15i]/[(4+6i)(3+15i)]
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= [7+21i]/[(12-90)+(18+60)i]
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= (7+21i)/(-78+78i)
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Cheers,
Stan H.
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