Periodic Functions

 Periodic Functions

Definition:
A periodic function is one that repeats its values at regular intervals, called the period (T). In AC circuits, the voltage and current waveforms are periodic, commonly sinusoidal, meaning they repeat after every cycle.

Example:
The function $V(t) = V_{\text{max}} \sin(\omega t)$ represents a periodic voltage signal, where $V_{\text{max}}$ is the maximum voltage and $\omega$ is the angular frequency.