E = 9 x io4 N/C
r = 2 cm = 2 x 10-2 m
Hence,
An alternating emf of frequency 50 Hz is applied to a circuit with a resistor of 20 Ω, an inductor of 100 mH and a capacitor of 30 ηF connected in series.
(i) What is the angle by which the current leads or lags the applied emf ?
(ii) Represent the voltage and the current in a vector diagram showing the phase angle.