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- General Radiotelephone Operator (Element 3 (GROL)) »
- FCC Element 3 - General Radiotelephone
4. What device is used to store electrical energy in an electrostatic field?
A capacitor stores electrical energy in an electrostatic field between its plates, unlike batteries which store chemical energy, transformers which transfer energy via magnetic fields, and inductors which store energy in magnetic fields.
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