A device that converts one from of energy into another form is termed as

Options

A. Transducer
B. Channel
C. Repeater
D. All of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:** The question asks for a device that converts one form of energy into another. This indicates that we are looking for a specific term used in physics and engineering.

2. **Identifying the Term:** The term that describes a device which performs this function is known as a "transducer."

3. **Defining a Transducer:** A transducer is defined as a device that converts energy from one form to another. For example, a microphone is a type of transducer that converts sound energy (acoustic energy) into electrical energy (electrical signals).

4. **Examples of Transducers:** Other examples of transducers include:
- Speakers (convert electrical energy back into sound energy)
- Thermocouples (convert thermal energy into electrical energy)
- Photovoltaic cells (convert light energy into electrical energy)

5. **Conclusion:** Therefore, the correct answer to the question is "transducer."

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