A capacitor with 150 Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is

A capacitor with 150 Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is

A).  Z = 150

B).  Z = 150  90°O

C).  Z = 150  -90°O

D).  Z = 150  180°O

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