Before starting this
module, you should be able to:
When you complete this
module, you should be able to:
Describe
the meaning of capacitive reactance and the effect it has upon AC current flow..
Explain the meaning
of each term in the equation for total capacitive reactance in a series circuit.
Calculate the total
capacitive reactance of a series circuit, given the values of the individual
reactanaces.
Explain the meaning
of each term in the equation for total capacitive reactance in a parallel circuit.
Calculate the total
capacitive reactance of a parallel circuit, given the values of the individual
reactanaces.
Topic 11-3.1 Capacitive Reactances in Series
Total
Reactance
XCT =
XC1 + XC2 + XC3 + ... + XCn
where:
XCT = total capacitive reactance
XC1 , XC2 , XC3 , XCn
= values of the individual reactances
The
total capacitive reactance of a series XC circuit is equal to the sum of the
individual reactances.
Note
that the procedure for finding the total icapacitive reactance of a parallel capacitor
circuit is identical to finding the total resistance of a parallel resistor circuit.
What is the total inductive
reactance of this circuit when XC1 = 150 W and XC2 = 75 W?
Use one of these inverse
equations to determine the total capacitive reactance of a parallel capacitor circuit:
or
where:
XCT = total capacitive reactance
XC1 , XC2 , XC3 , XCn = values of the
individual reactances
The procedure for
finding the total icapacitive reactance of a parallel capacitor circuit is identical to
finding the total resistance of a parallel resistor circuit.
The total reactace of two capacitors in
parallel can also be found by applying the product-over-sum formula:
What is the total capacitive reactance of this
circuit when XC1 = 150 W and XC2 = 200 W?
where: 
