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Formula Magnetic Field Outside a Current-Carrying Wire Magnetic field    Distance    Electric current

Formula
Formula: Magnetic Field Outside a Current-Carrying Wire
Current-carrying wire - magnetic field lines outside
Magnetic Field Inside and Outside a Cylinder (Graph)

Magnetic field

Unit
Magnetic field outside a long, current-carrying wire. The magnetic field runs circularly around the wire.

Distance

Unit
Radial distance from the wire to a point outside the wire at which the magnetic field \(B(r)\) is to be calculated.

Electric current

Unit
Constant electric current flowing through the wire.