Which device is designed to prevent overloads in an electrical circuit?

The device designed to prevent overloads in an electrical circuit is a fuse. Fuses serve as safety devices that protect electrical circuits from excessive current flow, which can occur during short circuits or when too many devices draw power simultaneously. When the current exceeds a predetermined level, the fuse melts, breaking the circuit and stopping the flow of electricity. This prevents potential damage to the wiring and connected devices, as well as reducing the risk of electrical fires.

In contrast, resistors are used primarily to control current flow and voltage levels within a circuit but do not provide overload protection. Capacitors are components that store and release electrical energy, often used for filtering or smoothing out electrical signals. Transformers are devices that change the voltage of alternating current (AC) in a circuit; they do not serve the purpose of protecting against overloads. Therefore, the function of a fuse as an overload protection device is critical in ensuring circuit safety and integrity.