Multiple choice

The dynamo is a device for converting

  1. heat energy to electrical energy

  2. mechanical energy to electrical energy

  3. magnetic energy into electrical energy

  4. chemical energy into electrical energy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A dynamo converts mechanical energy into electrical energy through electromagnetic induction. When a coil rotates in a magnetic field, mechanical energy gets transformed into electrical energy. Chemical energy to electrical conversion happens in batteries. Heat to electrical conversion occurs in thermocouples.

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