Derive an expression for the resonent frequency of the parllel circuit shown below.

• Parallel Resonance in an AC Circuit Occurs in a parallel LC circuit when inductive reactance X_L equals capacitive reactance X_c:

X_L = X_C

At this resonant frequency:

• The circuit impedance is maximum.
• The total current from the source is minimum.
• Large currents circulate between L and C internally.