Capacitance of capacitor, C=100µF=10−4F Resistance of coil, R=20π Inductance, L=12.5mH=1.25×10−4H Supply voltage, V=220V Frequency of AC source, f=
200
π
Hz For maximum value of alternating current in L−C−R circuit occurs at resonant condition. i.e XL=XC ∴Z=√R2+(XL−XC)2 =√R2+02(∵XL=XC) =R=20Ω ∴Imax=