Enter your Capacitance and Frequency (with their respective units) to calculate the Impedance Magnitude of a capacitor, along with the Capacitive Reactance (Xc), Angular Frequency (ω), and the Real and Imaginary Parts of the complex impedance.
Impedance Magnitude
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Capacitive Reactance (Xc)
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Angular Frequency (ω)
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Real Part
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Imaginary Part
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Phase Angle
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Capacitive reactance (Xc) is the opposition that a capacitor offers to alternating current. It is calculated using the formula Xc = 1/(2πfC), where f is frequency and C is capacitance.
Capacitor impedance is inversely proportional to frequency. Higher frequencies result in lower impedance, while lower frequencies result in higher impedance, making capacitors act like frequency-dependent resistors.
A pure capacitor has a phase angle of -90° (or -π/2 radians), meaning the current leads the voltage by 90 degrees in AC circuits.
Reactance is the imaginary part of impedance that represents opposition to AC current. Impedance includes both resistance (real part) and reactance (imaginary part) in complex form.
Common conversions: 1 F = 1000 mF = 1,000,000 μF = 1,000,000,000 nF = 1,000,000,000,000 pF. The calculator automatically handles these conversions.
Capacitor impedance is complex because it introduces a phase shift between voltage and current. The real part is zero for an ideal capacitor, and the imaginary part represents the capacitive reactance.
Angular frequency (ω) is frequency expressed in radians per second, calculated as ω = 2πf. It's used in impedance calculations and represents how fast the AC signal oscillates.
Yes, this calculator provides the complex impedance values needed for AC circuit analysis, including magnitude, phase angle, and both rectangular and polar forms.