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Question
A 47 Ω resistor is in series with an inductive reactance of 120 Ω across an ac source. The impedance, expressed in polar form, is
Options:
A .  47 ∠68.6° Ω
B .  120 ∠68.6° Ω
C .  129 ∠31.4° Ω
D .  129 ∠68.6° Ω
Answer: Option D
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