Introduction
- From now on….
- at least for a while (and excepting one ACT)
- all voltage sources and all currents will depend sinusoidally on time: proportional to sin(wt)
- very useful since this often occurs TV, radio WILL
- also arbitrary V(t) can be expressed in terms of frequency components
We are given an “ac voltage source”
We need to find the current that flows
it is also sinusoidal at the same frequency, w
it has a “phase” angle relative to the voltage source