Apr 21,2023
The coil resonates by itself
It is possible for a coil to resonate by itself if it is connected to a capacitor to form an LC circuit. An LC circuit consists of an inductor (the coil) and a capacitor that are connected together. When an electric charge is applied to the circuit, the capacitor stores the charge, and the inductor stores energy in the magnetic field created by the current flowing through it.
As the energy oscillates back and forth between the inductor and capacitor, the circuit can resonate at a specific frequency, known as the resonant frequency. At this frequency, the energy in the circuit is at its maximum, and the current flowing through the coil is at its peak.
If the coil is designed and constructed correctly, it can resonate by itself and maintain the oscillation for a period of time. This property is used in a variety of applications, including radio communication, where LC circuits are used in tuning circuits to select specific frequencies for reception or transmission.
