12th Class Chapter No 5 - Alternating Current Circuits in Physics for ISC

AC Circuits Basics, Impedance, Resonant Frequency, RL RC ...

Change of voltage and current with time, phase; peak and rms values of voltage and current; their relation in sinusoidal case.Variation of voltage and current in a.c. circuits consisting of only a resistor, only an inductor and only a capacitor (phasor representation), phase lag and phase lead.The LCR series circuit: phasor diagram, expression for V or I; phase lag/lead; impedance of a series LCR circuit (arrived at by phasor diagram); Special cases for RL and RC circuits.

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