Amps, short for amperes, measure the flow of electric current in a circuit. They indicate how much electricity is moving through a wire at any given time. The higher the amp rating, the more current is flowing. This measurement is crucial for understanding how much power devices like light bulbs or appliances will consume. In electrical systems, amps work alongside volts and ohms to define the relationship between voltage, current, and resistance. This relationship is described by Ohm's Law, which states that current (amps) equals voltage (volts) divided by resistance (ohms). Understanding amps helps ensure safe and efficient electrical usage.