The name of the si unit for magnetic field strength, such as that created around a current-carrying wire, is the

The name of the SI unit for magnetic field strength (symbol H), such as that created around a current-carrying wire is the Ampere per metre (A/m). A related quantity is the magnetic flux density (symbol B) which is measured in units of Tesla. The variable of proportionality between B and H is known as the permeability (symbol mu). 

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