WAEC - Physics (2012 - No. 42)
In a R-C circuit
Irms leads Vrms by 60o
Irms slags Vrms by 60o
Vrms lags Irms by 90o
Vrms leads Irms by 90o
解释
In an A.C circuit, the voltage(V\(_{rms}\) is completely in phase with the current for a resistor and lags the current by 90º for a capacitor(R - C)