AC Circuits: How to Calculate the Total Impedance
In DC circuits, we have a resistive component called resistance. In AC circuits, we have Impedance.
To calculate the impedance, we will use the formula:
Z_t = R+j(X_{eq})
where,
R is the resistance
Xeq is the equivalent reactance (Learn how to calculate equivalent reactance here)
j denotes it's being an imaginary number
This formula is for series-connected components, therefore, for parallel-connected components, we will add all impedances to get the total impedance.
Calculating for total impedance of some two components in parallel:
Z_t = \frac{(Z_1)(Z_2)}{Z_1+Z_2}
As you've noticed, probably, this is the same as calculating parallel resistances. Easy, right? Complexity arises when there are too many components connected in both series and parallel. To get the correct answer, simplify the circuit carefully.
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