When voltage increases in an AC circuit, what does a connected capacitor do?

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Prepare for the North Carolina ElectriCities Lineworker Exam. Study with flashcards and multiple choice questions, each question offers explanations and insights. Enhance your readiness for the exam!

Multiple Choice

When voltage increases in an AC circuit, what does a connected capacitor do?

Explanation:
When voltage across a capacitor increases, the capacitor charges. The higher potential draws more positive charge onto the plate connected to that side, increasing the stored energy in the electric field between the plates (Q = C V). In an AC circuit, voltage is always changing, so the capacitor charges during the rising portion of the waveform and discharges during the falling portion. It isn’t left open or unaffected; it continually responds to voltage changes by charging and discharging.

When voltage across a capacitor increases, the capacitor charges. The higher potential draws more positive charge onto the plate connected to that side, increasing the stored energy in the electric field between the plates (Q = C V). In an AC circuit, voltage is always changing, so the capacitor charges during the rising portion of the waveform and discharges during the falling portion. It isn’t left open or unaffected; it continually responds to voltage changes by charging and discharging.

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