The SI unit of the magnetic field is the Tesla (T).
The Tesla is the standard unit used to measure the strength of a magnetic field (also known as magnetic flux density, usually represented by the symbol B).
Here's a breakdown for better understanding:
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Definition: One Tesla is defined as the magnetic field strength that exerts a force of one Newton on a charge of one Coulomb moving at one meter per second perpendicular to the field.
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Relationship to other units: The Tesla can also be expressed in terms of other SI units as:
T = N / (A ⋅ m) = kg ⋅ s-2 ⋅ A-1 = Wb / m2
Where:
- N is Newton (force)
- A is Ampere (electric current)
- m is meter (length)
- kg is kilogram (mass)
- s is second (time)
- Wb is Weber (magnetic flux)
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Another related unit: While Tesla (T) is the SI unit for magnetic flux density (B), another related quantity, magnetic field strength (H), is measured in Amperes per meter (A/m). It's important to distinguish between these two. The question specifically asked for the magnetic field's SI unit which refers to magnetic flux density (B).
In summary, the Tesla (T) is the standard and preferred SI unit for measuring magnetic field strength or magnetic flux density.
