A capacitor with 150 ohm of capacitive reactance is across an ac source. The impedance, expressed in polar form, is
A. Z = 150 ohm
B. Z = 150 ∠90° ohm
C. Z = 150 ∠-90° ohm
D. Z = 150 ∠180° ohm
Answer: Option C
This Question Belongs to Electrical Engineering >> RC Circuits
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Related Questions on RC Circuits
When the frequency of the source voltage decreases, the impedance of a parallel RC circuit
A. Increases
B. Decreases
C. Does not change
D. Decreases to zero
The total impedance in rectangular form is
Z = R − jXc
In Polar form
Z= sqrt (R^2 + Xc^2)