Final answer:
An electric circuit is a closed pathway through which electric current flows, composed of various elements. Examples of electric circuits include the wires in a building that power devices and the motherboard in a computer.
Step-by-step explanation:
An electric circuit is a closed pathway made from conducting materials, typically metals, through which electric current can flow. It is composed of various elements, such as wires, resistors, capacitors, and diodes, that are connected together to achieve a specific function.
For example, the copper wires inside your school building form the electrical circuits that power devices like lighting, projectors, screens, and speakers.
Another example of an electric circuit is the motherboard in a computer, which contains a complex network of circuits that allow data and power to flow between different components.