# Capacitors in AC Circuits

** 12 ** A capacitor opposes the flow of an AC current.

** 13 ** Just as with resistance, you determine reactance by using an equation.

_{C}= the reactance of the capacitor in ohms.

** 14 ** Assume the capacitance is 1 μF and the frequency is 1 kHz.

Question

Find the capacitor's reactance. (*Note*: 1/(2π) = 0.159, approximately.) _____

f = 1 kHz = 10^{3} Hz

C = 1 μF = 10^{−6} F

Thus,

** 15 ** Now, perform these simple calculations. In each case, find X_{C1} (the capacitor's reactance at 1 kHz) and X_{C2} (the capacitor's reactance at the frequency specified in the question).

Find X_{C1} and X_{C2}: ...

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