- A technique called "Superposition" is used to solve for current flow through, and the voltage drop across, any impedance in a multiple source circuit.
Follow these steps:
- Replace all but one of the voltage sources with a "short". Current sources are replaced with an "open". (All sources must have the same frequency.)
- Solve for the current or voltage flowing through each impedance.
- Select the next source and repeat until all sources have been used.
- Add all the currents or voltages for each impedance and label the original circuit.
Problem Example:
Please Watch:This video will provide you a further understanding of Superposition Theorem.
Reflection:
The method used for using superposition theorem in AC circuits is still the same with DC circuits. The difference is that values may be given in complex or phasor form and sources are sometimes shown in different frequencies which requires you to convert them.
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