Power in LCR Circuit
The power supplied by the emf in a series LCR circuit depends on the frequency w. It will turn out that the maximum power is supplied at the resonant frequency w0.
- The instantaneous power (for some frequency, w) delivered at time t is given by:
- The most useful quantity to consider here is not the instantaneous power but rather the average power delivered in a cycle.
- To evaluate the average on the right, we first expand the sin(wt-f) term.