What device stores electrical energy in an electric field and is commonly used in electronic circuits?
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A capacitor stores energy by keeping positive and negative charges separated on two conductive plates. Unlike batteries, they can release their stored energy almost instantly. This makes them incredibly useful for camera flashes, audio equipment, and smoothing out power supplies in electronics. Photo: Eric Schrader from San Francisco, CA, United States, Wikimedia Commons, CC BY-SA 2.0.
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Source: Wikipedia (CC BY-SA)
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