Magnetic Energy in an Inductor (U = ½ L i²)
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U = ½ L i²
What each symbol means
| Symbol | What it stands for |
|---|---|
| L | Self-inductance (H) |
| U | Energy stored in magnetic field of coil (J) |
| i | Current (A) |
When to use this
Quasi-static; no mutual coupling to other coils (pure self-energy of that branch).