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9. A 47 Ω resistor and a capacitor with 150 Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is ________.
(a) Z = 47 Ω + j150 Ω
(b) Z = 47 Ω – j150 Ω
(c) Z = 197 Ω
(d) Z = 103 Ω
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