With the help of phasor diagram derive an expression for impedance in LCR circuit.

Derive an expression for average power in an LCR a.c. circuit.

Using phasor diagram, derive an expression for impedance of an a.c. circuit containing LCR in series.

With the help of a necessary diagram, derive an expression for magnetic field due to straight current carrying conductor at any point.

An a.c. voltage E = E_0 sin omegat is applied across a series combination of an inductor L, a capacitance C and a resistor R. Use the phasor diagram solution to obtain expressions for the impedance of the circuit.