AC Circuits with Resistors, Inductors and Capacitors

Purely Resistive Circuits

In resistive elements the current and voltage are in phase.

purely resistive circuit
Figure 1(a) purely resistive circuit

waveform of a purely resistive circuit
Figure 1(b) waveform of a purely resistive circuit (current in phase with voltage)

Phasor diagram resistive circuit
Figure 1(c) phasor diagram resistive circuit
Resistance

Purely Capacitive Circuits

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