A 12 kΩ resistor is in series with a 90 mH coil across an 8 kHz ac source. Current flow in the circuit, expressed in polar form, is I = 0.3 ∠0° mA. The source voltage, expressed in polar form, is
A. 3.84 ∠20.6° V
B. 12.8 ∠20.6° V
C. 0.3 ∠20.6° V
D. 13.84 ∠69.4° V
Answer: Option A
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