AC through resistor, capacitor and inductor (tabular form)


The Table below is the table containing the details of AC through resistor, capacitor and inductor.

Type of circuit Value of current Total impedance Remarks
R circuit I=E/R Z=R Both current and emf are in phase
L circuit I=E/XL Z=XL=Lw Current lags emf by π/2
C circuit I=E/XC Z=XC=1/Cw Current leads emf by π/2
LR circuit I=E/Z Z=√(R2+XL2) where XL=Lw In R: Both current and emf are in phaseIn L: Current lags emf by π/2
So θ=tan-1(Lw/R)
RC circuit I=E/Z Z=√(R2+XC2) where Xc=1/Cw In R: Both current and emf are in phaseIn C: Current leads emf by π/2
So θ=tan-1(-1/CwR)
LCR circuit I=E/Z Z=√{R2+(XL-XC)2 }where Xc=1/Cw, XL=Lw In R: Both current and emf are in phaseIn C: Current leads emf by π/2
In L: Current lags emf by π/2
So θ=tan-1{(Lw-1/Cw)/R}