Question

why LC circuit is unrealistic

Answer 1

An LC circuit, also called a resonant circuit, tank circuit, or tuned circuit, is an electric circuitconsisting of an inductor, represented by the letter L, and a capacitor, represented by the letter C, connected together. The circuit can act as an electrical resonator, an electrical analogue of atuning fork, storing energy oscillating at the circuit's resonant frequency

Answer 2

An LC circuit, also called a resonant circuit, tank circuit, or tuned circuit, is an electric circuit consisting of an inductor, represented by the letter L, and a capacitor, represented by the letter C, connected together. The circuit can act as an electrical resonator, an electrical analogue of a tuning fork, storing energy oscillating at the circuit's resonant frequency.