A device that converts mechanical energy into electrical energy is called a:
Amotor
Btransformer
Cgenerator
Dsolenoid
Answer & Solution
Correct answer: C. generator
1. The stem describes a device whose energy input is mechanical (e.g. rotation) and whose output is electrical.
2. The text states: "A device such as this that converts mechanical energy into electrical energy is called a generator."
3. A motor does the reverse conversion (electrical to mechanical), and a transformer changes voltage levels rather than energy form.
4. So the correct device for this mechanical-to-electrical conversion is a generator.
_Source: OpenStax Physics Ch 20 "Magnetism", p.687 §20.2 Motors, Generators, and Transformers_
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