Final answer:
Electric currents are involved in electric circuits with electricity flowing through a circuit. Current is the rate of electric charge movement, and Ohm's Law relates current flow directly to the applied voltage.
Step-by-step explanation:
Electric currents are related to electric circuits in that electricity flows through a circuit. An electric circuit is a complete, closed pathway through which electric current flows, much like water flows through a network of pipes. This idea aligns with Option 1, indicating that electricity flows through a circuit. Electric current is the rate at which electric charge moves through a conductor, such as a wire, and is measured in amperes (A), where 1 A equals 1 coulomb of charge passing through the conductor every second. The direction of electric current is conventionally defined as the direction in which positive charge would flow, although it is actually the electrons (which possess negative charge) that move through the conductor from the negative terminal to the positive terminal. Ohm's Law states that the current that flows through most substances is directly proportional to the voltage applied to it, meaning that when a voltage source applies a potential difference across a conductor, it creates an electric field that drives the current.