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A 120 resistor is in parallel with a capacitor with a...

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RC Circuits
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A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?

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Correct Answer: Option A
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1 Comment
Afifa
Afifa 3 years ago
For parallel, Admittance (Y) Y=1/Z
Y=(1/R)+(j/Xc)
|Y|= sqrt[(0.00833^2)+(0.025^2)] =0.02634 mho
Z=1/0.02634=37.9 ohms
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