CAPACITOR - ac rc circuit charging and discharging

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Research Survey

Joined Feb 27, 2016
14
hello , i suddenly got confused about capacitors when we discussed about triacs with capacitor as triggering time delay element (ac source)

in ac rc circuit, i understand that since ac is sinusoidal, the capacitor will continuously charge and discharge. So literally, the capacitor is not charging up to a certain voltage since every 1/4 cycle it changes polarity and state (charging and discharging). ?

however changing the point of view, an rc circuit, when analyzed via ac analysis, we get the impedance and reactance and compute the voltage using kvl. does that mean the voltage drop across capacitor is equal to the voltage or charged stored in it?

please help me in understanding. and correct my misconcepcion. thank you in advance
 
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