Engineering Board Exam Reviewer · RC Circuits · medium
In a series RC circuit, the capacitor voltage VC compared with the resistor voltage VR
- leads it by 90°
- is in phase with it
- lags it by 45°
- lags it by 90°
Answer
D. lags it by 90°
Solution
The resistor voltage is in phase with the current, and the capacitor voltage lags the current by 90°. Therefore VC lags VR by 90°.
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