Magnetic field inside long solenoid (B = μ₀nI = μ₀NI/L)
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B = μ₀nI = μ₀NI/L
What each symbol means
| Symbol | What it stands for |
|---|---|
| L | Length of solenoid (m) |
| N | Total turns |
| n | Turns per unit length (m⁻¹) |
When to use this
Ideal long solenoid; interior uniform field; far from ends.