Originally posted by RAMAKANTA
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capcitor vs current
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Originally posted by remeshlogo View PostHow to find maximum discharging current of capacitor? is any simple relation between capacitance and current if exist please post the relation.
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Current is a flow of electrical charge and is carried by moving electrons in a wire. Electric current cause Joule hearing which creates light and magnetic field used in motors, inductors, and generators. While Capacitor is an electronic component that stores electric charge. The effect of a capacitor is known as capacitance. Most capacitors contain at least two electrical conductors often in the form of metallic plates or surfaces separated by a dielectric medium.
Capacitors store energy for later use. The voltage and current of a capacitor are related. The relationship between a capacitor’s voltage and current define its capacitance and its power. To see how the current and voltage of a capacitor are related, you need to see with the help of this relation by taking the derivative of the capacitance equation q(t) = Cv(t), which is dq(t)/dt = Cdv(t)/ dt
Because dq(t)/dt is the current through the capacitor, you get the following ivrelationship:
This equation tells you that when the voltage doesn’t change across the capacitor, current doesn’t flow; to have current flow, the voltage must change.
To express the voltage across the capacitor in terms of the current, you integrate the preceding equation as follows:
The second term in this equation is the initial voltage across the capacitor at time t = 0.Attached Files
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