Physics Ontology

One map of physics, three ways in. Drill down on any quantity to see its units, the equations it lives in, and how its values span the universe.

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LL
Electromagnetism

Inductance

Opposition to a change in electric current.

SI unit

henry (H)

Dimension: [ ML2T−2I−2 ][\,M L^2 T^{-2} I^{-2}\,]

Other units

  • henry (H)
  • millihenry (mH)×1.00e-3

Order of magnitude

How values of inductance span the physical world (in H, log scale).

PCB trace
10-8 H
Small inductor
10-3 H
Large coil
101 H
Lower limit10-9 HUpper limit102 H