Energy of an Inductor

• How much energy is stored in an inductor when a current is flowing through it?

• Start with loop rule:

• From this equation, we can identify PL, the rate at which energy is being stored in the inductor:

• We can integrate this equation to find an expression for U, the energy stored in the inductor when the current = I:

Þ

• Multiply this equation by I:

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