Self-Inductance and Back EMF (ε = -L di/dt; L = NΦ/i)
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ε = -L di/dt; L = NΦ/i
What each symbol means
| Symbol | What it stands for |
|---|---|
| L | Self-inductance (H) |
| i | Current through the coil (A) |
| NΦ | Total flux linkage (Wb·turns) |
When to use this
Linear magnetic material (L constant); slowly varying i so quasi-static fields apply.