An LC circuit, also known as a resonant circuit, consists of an inductor (L) and a capacitor (C) connected together. These components store energy in magnetic and electric fields, respectively. When the circuit is energized, the energy oscillates between the inductor and capacitor, creating an alternating current. This oscillation can produce specific frequencies, making LC circuits essential in applications like radio transmitters and receivers. The behavior of an LC circuit is characterized by its resonant frequency, which depends on the values of the inductor and capacitor. The formula for calculating this frequency is f = \frac12\pi\sqrt{LC} . LC circuits are widely used in various electronic devices, including tuning circuits in radios and filters in audio equipment.