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Forum on Lecture Module 08
EEE
In AC (alternating current) circuits, the voltage and
current vary periodically with time. Unlike DC (direct current)
circuits, which have a constant voltage and current, AC circuits involve
sinusoidal waveforms.
AC circuits
consist of various components such as resistors, capacitors, inductors,
and AC power sources (generators). Here are some key concepts and
equations related to AC circuit analysis:
1.
Sinusoidal Waveforms: AC voltage and current can be represented by
sinusoidal waveforms. The most common representation is the sine wave,
which is characterized by its amplitude, frequency, and phase.
2.
Phasors: Phasors are complex numbers used to represent the magnitude
and phase angle of AC quantities. They simplify calculations in AC
circuits by converting sinusoidal functions into algebraic operations.