Ohm's law holds true for AC circuits, but voltage and current both increase and decrease together in a cycle while impedance remains constant. Anyone working within electrical systems must understand ...

Thomas Edison favored DC circuits, but Nikola Tesla thought AC circuits were the way to go. Clearly Tesla won that argument. Let’s see why!

In a DC circuit, electrons move in one direction and keep rotating in the circuit. In an AC circuit, electrons doesn’t circulate and only move back and forth.

Thus, with this small-signal approximation describing the active device under AC conditions, we can use linear-circuit-analysis techniques to analyze the overall circuit under AC conditions (given ...