1. Powering Devices: This is the most common use. Electric current flows through wires and circuits to power everything from smartphones and laptops to refrigerators and washing machines. The current provides the energy for these devices to function.

2. Generating Light: Electric current flowing through a filament in a light bulb causes it to heat up and glow, producing light. This is also how LED lights work, though the process is different.

3. Creating Heat: Electric current can be used to create heat in devices like electric ovens, toasters, and electric heaters. The current flowing through a resistance element causes it to heat up, transferring the heat to the surroundings.

Let me know if you'd like to learn more about any of these uses!