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capacitive reactance

Opposition to the flow of alternating current caused by capacitance in the circuit. Capacitive reactance, whose symbol is XC, is measured in ohms and is determined by the capacitance in the circuit and the frequency of the AC. The formula for capacitive reactance is:

XC = 1 / (2π f C)

XC = Capacitive reactance in ohms

2π = A constant, 6.28

f = Frequency of the AC in hertz

C = Capacitance in farads

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