Energy is stored within an inductor that is carrying a current. The amount of energy depends on this current, but it also depends on a property of the inductor. This property has the following unit:

Why

The energy stored in an inductor depends on its inductance, which measures how well the component creates a magnetic field from electric current. The full explanation — and one for every question — is in Pro.

Practise this section

Advanced theory is section A-001 of the Advanced exam: Advanced theory: time constants, reactance, impedance, resonance, Q, and the mathematics behind tuned circuits.

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