USCG Exam PracticeAC circuits and theory
In an AC circuit containing only resistance, what is the phase relationship between voltage and current?
- A. Current leads voltage by 90°
- B. Current lags voltage by 90°
- ✓ Voltage and current are in phaseCorrect
- D. Current leads voltage by 45°
Why C is correct
NEETS Mod. 2 §1-2 states that in a purely resistive circuit voltage and current are in phase. Phase shift is caused by inductance or capacitance, neither of which is present in a purely resistive load.
Cited:NEETS Mod. 2 §1-2