A DC circuit is an electrical circuit that carries direct current (DC), where the flow of electric charge is unidirectional. This means that the current flows in a single direction, typically from a positive terminal to a negative terminal. DC circuits are commonly found in batteries, electronic devices, and solar panels, where stable voltage is essential for proper operation. In a DC circuit, components such as resistors, capacitors, and diodes are used to control the flow of electricity. The voltage in a DC circuit remains constant over time, making it easier to predict and manage compared to alternating current (AC) circuits, where the current periodically reverses direction.