Electric currents are the flow of electric charge, typically carried by moving electrons in a conductor such as a wire. This flow is driven by a difference in electric potential, often created by a battery or generator. The strength of an electric current is measured in amperes (A), and it plays a crucial role in powering our everyday devices, from light bulbs to computers. When electric currents flow through a circuit, they can produce heat, light, and magnetic fields. Understanding electric currents is essential for designing electrical systems and ensuring safety in their use. Concepts like voltage, resistance, and Ohm's Law are fundamental to grasping how electric currents operate.