A 100 µF capacitor in series with a 40 Ω resistance is connected to a 110 V, 60 Hz supply. (a) What is the maximum current in the circuit? (b) What is the time lag between the current maximum and the voltage maximum?
(a) ω=2πf=120π rad/s Z2=R2+ω2C21 ⟹Z≈48 Ω V0=V2=1102 Io=Vo/Z=3.24A (b) tanϕ=R1/ωC=0.6635 ϕ=33.56π/180 rad Time lag is ϕ/ω=1.55ms
