NEIEP Magnetism and Electromagnetism (355)

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What is the typical unit for inductance and its relation to flux and current?

Inductance has units of henry; L = I / (N Φ)

Inductance has units of tesla; L = N Φ / I

Inductance has units of henry; L = N Φ / I

Inductance is a measure of how much magnetic flux linkage a coil develops per ampere of current. The magnetic flux through one loop is Φ, measured in webers. For N turns, the total flux linkage is NΦ. By definition, flux linkage λ equals L times current, so L = λ / I = (N Φ) / I. The SI unit that results is the henry, with 1 henry = 1 weber per ampere. So the typical unit for inductance is henry, and the relation is L = NΦ / I.

Inductance has units of volt per ampere; L = Φ / I