01 An electric motor is based on which energy conversion?
Answer and explanation
Correct answer: A. Electrical energy into mechanical energy
Explanation: The governing concept is the motor effect: a current-carrying conductor placed in a magnetic field experiences a force. In an electric motor, this force produces torque and rotation, so the input electrical energy is converted mainly into mechanical energy, with some unavoidable heat and sound losses. Mechanical-to-electrical conversion describes a generator, while the other choices describe different processes. Therefore, option A is correct.