Which energy transformation occurs in a typical electric motor?

Which energy transformation occurs in a typical electric motor?

• A. Electrical energy into mechanical energy
• B. Mechanical energy into electrical energy
• C. Electrical energy into thermal energy
• D. Chemical energy into electrical energy

Answer: (A)

Electric motors convert electrical energy into mechanical energy to produce motion. When current flows through the motor windings, it creates magnetic fields that interact with the magnets or other windings. This interaction generates torque on the rotor, causing it to spin and do useful work, such as turning a fan or driving a conveyor. The opposite transformation happens in a generator, where mechanical energy is converted into electrical energy. Electrical energy can also become thermal energy in resistive elements like heaters, and chemical energy is converted into electrical energy in a battery or similar source.

Electric motors convert electrical energy into mechanical energy to produce motion. When current flows through the motor windings, it creates magnetic fields that interact with the magnets or other windings. This interaction generates torque on the rotor, causing it to spin and do useful work, such as turning a fan or driving a conveyor.

The opposite transformation happens in a generator, where mechanical energy is converted into electrical energy. Electrical energy can also become thermal energy in resistive elements like heaters, and chemical energy is converted into electrical energy in a battery or similar source.