Which of the following is a component of a complete electrical circuit?

A complete electrical circuit must include several fundamental components that work together to allow the flow of electricity. One essential component is the power source, which provides the electrical energy needed to drive the current through the circuit. This could be a battery or a generator, for instance.

In addition to the power source, a load is crucial as it represents the component that consumes electrical energy to perform work, such as a light bulb or an electric motor. Without a load, the circuit would not serve any purpose.

Furthermore, a control device plays a significant role in managing the flow of electricity within the circuit. This could be a switch, relay, or any other device that controls or modifies the electrical energy flow to the load.

When considering the necessity of each of these components, it becomes clear that a complete electrical circuit requires all of them to function correctly. The power source provides the energy needed, the load converts that energy into useful work, and the control device manages the operational flow of electricity. Therefore, recognizing that all these elements are integral to the functionality of an electrical circuit is essential, leading to the conclusion that the entire set of components—power source, control device, and load—are necessary for a complete circuit.