Which component stores energy in magnetic fields?

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Multiple Choice

Which component stores energy in magnetic fields?

Explanation:
An inductor stores energy in the magnetic field created by current flowing through its coil. As current builds, energy is drawn into that magnetic field and increases with the current squared, described by W = 1/2 L I^2. When the current drops, the field collapses and can release energy back into the circuit. This magnetic energy storage also explains why inductors oppose rapid changes in current. By contrast, a capacitor stores energy in an electric field between plates, a resistor simply dissipates energy as heat, and a diode mainly controls current without storing significant energy. So the component that stores energy in magnetic fields is the inductor.

An inductor stores energy in the magnetic field created by current flowing through its coil. As current builds, energy is drawn into that magnetic field and increases with the current squared, described by W = 1/2 L I^2. When the current drops, the field collapses and can release energy back into the circuit. This magnetic energy storage also explains why inductors oppose rapid changes in current. By contrast, a capacitor stores energy in an electric field between plates, a resistor simply dissipates energy as heat, and a diode mainly controls current without storing significant energy. So the component that stores energy in magnetic fields is the inductor.

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