Which device stores energy in an electric field?

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Multiple Choice

Which device stores energy in an electric field?

Explanation:
A capacitor stores energy in an electric field. When you apply a voltage across its plates, charges accumulate on the plates, creating an electric field in the space between them. That field stores the energy, with the amount growing as the voltage or the capacitance increases (expressed as 1/2 C V^2 or 1/2 QV). This is different from a coil, which stores energy in a magnetic field generated by current; a resistor simply converts energy into heat, not storage; and a transformer mainly uses magnetic energy to transfer power between circuits.

A capacitor stores energy in an electric field. When you apply a voltage across its plates, charges accumulate on the plates, creating an electric field in the space between them. That field stores the energy, with the amount growing as the voltage or the capacitance increases (expressed as 1/2 C V^2 or 1/2 QV). This is different from a coil, which stores energy in a magnetic field generated by current; a resistor simply converts energy into heat, not storage; and a transformer mainly uses magnetic energy to transfer power between circuits.

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