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.
Speed of light in air = C Distance travelled in t sec.
d = Ct ...(i)
Also,
where C' is the speed of light in given medium.
Hence distance travelled,
D = Speed x Time
= C't