Derive an expression for the impedance of an a.c. circuit consisting of an inductor and a resistor.

Derive an expression for the impedance of an a.c circuit with an inductor L and a resistor R in series.

Derive the expression for the impedance of an a.c. circuit with an inductor L and a resistor R in series.

Define impedance of an a.c. circuit.

Derive an expression for impedance of an a.c. circuit with an induct L, capacitor C and a resistor R in series. What is condition of resonance?

Derive the expression for the impedance of an a.c. circuit with a capacitor and a resistor in sereis.

Derive an expression for average power of an ac circuit.