Capacitor in AC Circuit: Why there is such relation of current and voltage?

AI Thread Summary
In an AC circuit, the relationship between current and voltage is characterized by their phase difference, where current is at its maximum when voltage is zero and vice versa. This phenomenon occurs because current is proportional to the rate of change of voltage, expressed mathematically as i = C * (dv/dt). The discussion highlights the importance of understanding the derivative of voltage to grasp this relationship. Participants also emphasize the need for clear communication in technical discussions. Overall, the interaction underscores the significance of mathematical principles in explaining AC circuit behavior.
akmafia001
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In AC circuit when the voltage is zero the current is maximum...
When it reaches to 90 then the current is zero...
And same as for the other cycles till 360...

Why the current is maximum when the voltage is zero and when the voltage is maximum the current is zero...?

Please explain...
 
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The current is proportional to the rate of change (derivative) of voltage.
 
can u explain it a bit more?
 
i = c \frac{dv}{dt}Do you know what "rate of change" is?
 
thnx... it helped...

uart can u apply some values on the above formula that u have mentioned?
 
did i written something wrong?
 
akmafia001 said:
did i written something wrong?
Yes. From the https://www.physicsforums.com/showthread.php?t=414380" "In the interest of conveying ideas as clearly as possible, posts are required to show reasonable attention to written English communication standards. This includes the use of proper grammatical structure, punctuation, capitalization, and spelling. SMS messaging shorthand, such as using "u" for "you", is not acceptable."
akmafia001 said:
thnx... it helped...

uart can u apply some values on the above formula that u have mentioned?
 
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