CRTC Electronics
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Lesson Plan
Capacitive Reactance
Capacitive Reactance (Xc) is a measure of the opposition of capacitance. Xc varies with the frequency of the electrical signal. Reactance is measured in ohms, symbol 
.
Xc= reactance
f = frequency
C = capacitance
Xc and f
Xc is large at low frequencies
Xc is small at high frequencies.
HINT: Capacitors pass AC and block DC
practice
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