INTRODUCTION
Electrical power generation, transmission and distribution employ sinusoidal voltage and current waveforms to carry power. That, in itself, is a sufficient reason for a detailed discussion on steady-state analysis of circuits containing R, L, C and M.
A sinusoidal waveform is completely specified by three parameters. For example, if vs(t) = A sin(ωt + θ) V, this waveform is completely specified by three numbers – A, ω and θ. Therefore, sending a pure sine wave from a transmitter to a receiver in a communications context is pointless because such a waveform cannot carry any information other than that is contained in just three numbers. And, for that matter, no waveform that is known completely beforehand can carry any information. ...
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