What device converts electrical energy into mechanical energy?

An electric motor is a device specifically designed to convert electrical energy into mechanical energy. This process occurs when electrical current flows through the coils of wire in the motor, creating a magnetic field that interacts with magnets or other magnetic fields within the motor. This interaction generates rotational motion, which can then be used to perform work, such as turning a shaft connected to a fan or a pump.

This conversion is fundamental in numerous applications, such as household appliances (e.g., washing machines, fans) and industrial machinery, where mechanical tasks need to be accomplished using electrical power. The other options listed serve different purposes: a generator converts mechanical energy into electrical energy, a transformer changes the voltage of electrical energy without converting it to mechanical energy, and a battery stores and supplies electrical energy but does not convert energy types itself.