Phasor Diagram

An ac source of voltage V = V_ 0sin omegat is connected to a series combination of L, C and R. Use the phasor diagram to obtain expressions for impedance of the circuit and phase with the voltage. What is circuit in this condition called?

a) Derive the expression for the current flowing in an ideal capacitor and its reactance when connected to an ac source of voltage V=V_0sin omegat b) Draw its phasor diagram. c) If resistance is added in series to capacitor what changes will occur in the current flowing in the circuit and phase angle between voltage and current.

The amplitudes of two coherent waves are vector quanti- ties. In the given table, Column I shows the phase differ ence between two coherent waves, Column II shows the path difference between them and Column III shows their resultant amplitudes. When is the phasor diagram at secondary maxima?