Power effects in a dc network cannot be determined using superposition because:
A) power computations require a voltage and a current source in each circuit.
B) power is proportional to the square of the current or voltage.
C) open sources and shorted sources neither consume nor produce power.
D) all voltage and current sources are ideal devices that consume no power.

Question

Quizplus · Accepted Answer

Superposition involves analyzing a linear network by considering one independent source at a time while all other independent sources are turned off (voltage sources are replaced by short circuits and current sources by open circuits). However, because power is proportional to the square of the current or voltage, when sources are considered individually, the nonlinear relationship between power and voltage/current means that the effects of power cannot simply be added together as is done with voltages or currents in superposition analysis.

Power Effects in a Dc Network Cannot Be Determined Using