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What energy conversion does take place in a generator when it is in use?

1. The electrical energy changes into the electrical energy.
2. The mechanical energy changes into the mechanical energy.
3. The electrical energy changes into the mechanical energy.
4. The mechanical energy changes into the electrical energy.

Correct answer: The mechanical energy changes into the electrical energy.

Solution

A generator uses motion to induce an electric current, so it converts mechanical energy into electrical energy. That is why the correct choice is the one describing mechanical energy becoming electrical energy.

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