What is meaning of the I lags 90 degree in capctor and leads in inductor
Question
What is meaning of the I lags 90 degree in capctor and leads in inductor
Solution
In electrical circuits, the terms "lag" and "lead" are used to describe the phase difference between the current and voltage.
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Capacitor: In a purely capacitive AC circuit, when the AC supply voltage is at its maximum, the capacitor is uncharged. As the supply voltage decreases to zero, the capacitor starts charging. This means the current is at its maximum when the voltage is at zero. Hence, we say that the current "leads" the voltage in a capacitor by 90 degrees.
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Inductor: In a purely inductive AC circuit, when the AC supply voltage is at its maximum, the inductor opposes the change in current. As the supply voltage decreases to zero, the current reaches its maximum. This means the current is at its maximum after the voltage has decreased to zero. Hence, we say that the current "lags" the voltage in an inductor by 90 degrees.
This behavior is due to the inherent properties of capacitors and inductors. Capacitors resist changes in voltage, while inductors resist changes in current. This causes the phase shift between current and voltage in AC circuits.
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