Power circuits are electrical pathways that deliver energy from a source, such as a battery or generator, to various devices or systems. They consist of components like wires, switches, and resistors, which work together to control the flow of electricity. Power circuits can be found in everyday items, from household appliances to industrial machinery. In a power circuit, the flow of electricity is typically measured in volts, amps, and ohms. Understanding these measurements helps in designing efficient circuits that minimize energy loss. Safety devices, such as fuses and circuit breakers, are also essential to protect against overloads and short circuits, ensuring the reliable operation of electrical systems.