Power from Multiple AC Sources

Power from multiple AC sources is found by adding the effects of each source separately. In a circuit with two sinusoidal voltage sources, each source acts independently. The superposition principle says the total current is the sum of the currents produced by each source alone. If those currents are labeled i1 and i2, they ...

Consider a circuit with two sinusoidal voltage sources.

According to the superposition principle, the total current resulting from both sources is the sum of currents due to each source independently.

Also, the instantaneous power is the square of the instantaneous current times the resistance.

Integrating this over one peri...