Write expression for current in a series LCR circuit with a.c. source?

Write expression for current in an A.C. circuit with inductor only.

Give applications of resonance in series LCR circuit.

In an LCR-series a.c. circuit, the current

To reduce the reasonant frequency in an LCR series circuit with a generator.

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

Derive the expression for the impedance of an a.c. circuit with an inductor ‘L’, capacitor ‘C’ and a resistor ‘R’ in series. What iscondition of resonance ?

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