31. Alternating Current

Phasors for Capacitors

Example Simple Voltage current across capacitor using Phasors

Capacitors in AC Circuits with Phasors | Doc Physics

Phasor Relationship for Capacitor

Phasor in Capacitor and Inductor

Phasor representation of capacitor

a) imax = 4.2A b) θiC = 115o θVC = 185o

a) imax = 4.2A b) θiC = 185o θVC = 115o

a) imax = 4.2A b) θiC = 115o θVC = 25o

a) imax = 4.2A b) θiC = 25o θVC = 115o

An AC source operates at a maximum voltage of 60 V and is connected to a 0.7 mF capacitor. If the current across the capacitor is i(t) = iMAX cos[(100 s−1 )t],&nbsp;a) What is iMAX?&nbsp;b) Draw the phasors for voltage across the capacitor and current in the circuit at t = 0.02 s. Assume that the current phasor begins at 0°.

Transforming capacitors to the phasor domain

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