What is a device that usefully changes energy between forms called?

A transducer.

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  1. A resistor
  2. A capacitor
  3. A transducer ✔

Why: Transducers change energy from one form to another. A battery is one example, changing chemical energy to electric energy.

Huh, didn't know that: Transducers change energy from one form to another. A battery is one example, changing chemical energy to electric energy.

The dad joke
That device really transduces the mood!
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References

Answer: A transducer. Transducers change energy from one form to another. A battery is one example, changing chemical energy to electric energy.

  1. Energy en.wikipedia.org/wiki/Energy
    Devices that usefully transform between these forms are called transducers.
    Checked 2026-11-07.

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