Final answer:
The total power delivered by the voltage source in a circuit must be equal to the total power absorbed by the circuit components.
Step-by-step explanation:
In a circuit, the total power delivered by the voltage source must be equal to the total power absorbed by the circuit components. This is known as the Law of Energy Conservation in electrical circuits.
For example, if we have a circuit with one voltage source and a single resistor, the power supplied by the voltage source and the power dissipated by the resistor are equal.
This principle holds true in more complicated circuits as well, with the total power supplied equaling the total power dissipated by the resistors.