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Homework answers / question archive / When calculating power for a series circuit we must look at the polarity of the voltages to calculate the voltage first
When calculating power for a series circuit we must look at the polarity of the voltages to calculate the voltage first. If all are positive, then the voltage is the sum of them all; however, if polarities are different then it is the difference. Any resistors must also be calculated for in a series circuit.
Attached is an example if you feel like solving for P!
