1.

A capacitor, resistor of 10 Ω, and an inductor of 70 mH are in series with an ac source marked 120 V, 70 Hz. If it is found that voltage is in phase with the current, then find out the impedance of the circuit.

A. 5 Ω
B. 10 Ω
C. 100 Ω
D. 900 Ω
Answer» C.


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