In an AC circuit, the resistance offered by a capacitor is called what?

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Multiple Choice

In an AC circuit, the resistance offered by a capacitor is called what?

Explanation:
The effect of a capacitor in an AC circuit is called capacitive reactance. A capacitor doesn’t oppose current by dissipating power like a resistor; instead, it stores energy in an electric field and its opposition to AC depends on frequency. The capacitive reactance is Xc = 1/(2πfC), so it decreases as frequency increases. The capacitor’s impedance is Z = 1/(jωC) = -jXc, which is purely imaginary, meaning the current leads the voltage by 90 degrees. That phase behavior is what makes this opposition a reactive effect, not a real resistance. The other terms aren’t standard or don’t describe this behavior correctly.

The effect of a capacitor in an AC circuit is called capacitive reactance. A capacitor doesn’t oppose current by dissipating power like a resistor; instead, it stores energy in an electric field and its opposition to AC depends on frequency. The capacitive reactance is Xc = 1/(2πfC), so it decreases as frequency increases. The capacitor’s impedance is Z = 1/(jωC) = -jXc, which is purely imaginary, meaning the current leads the voltage by 90 degrees. That phase behavior is what makes this opposition a reactive effect, not a real resistance. The other terms aren’t standard or don’t describe this behavior correctly.

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