In what unit is the strength of the magnetic field measured?

In what unit is the strength of the magnetic field measured?

• A. Gauss
• B. Henry
• C. Teslas
• D. Webers per square meter

Answer: (C)

The main idea here is how we quantify the strength of a magnetic field. In physics, the magnetic field strength (often called magnetic flux density) is measured in SI units called teslas. A tesla is defined as one weber of magnetic flux per square meter, so you can also write the same quantity as webers per square meter. That connection explains why the symbol is tied to both terms, but in standard usage the name you’ll see is tesla. Gauss is an older CGS unit for magnetic flux density; 1 tesla equals 10,000 gauss, so gauss isn’t the SI unit even though it appears in some contexts. Henry measures inductance, not magnetic field strength, so it isn’t appropriate here. Webers per square meter is mathematically equivalent to tesla, but in most contexts the recognized unit name is tesla, which is why that option is the best fit. So, the unit used for measuring the strength of the magnetic field in SI familiar to most science contexts is tesla.

The main idea here is how we quantify the strength of a magnetic field. In physics, the magnetic field strength (often called magnetic flux density) is measured in SI units called teslas. A tesla is defined as one weber of magnetic flux per square meter, so you can also write the same quantity as webers per square meter. That connection explains why the symbol is tied to both terms, but in standard usage the name you’ll see is tesla.

Gauss is an older CGS unit for magnetic flux density; 1 tesla equals 10,000 gauss, so gauss isn’t the SI unit even though it appears in some contexts. Henry measures inductance, not magnetic field strength, so it isn’t appropriate here. Webers per square meter is mathematically equivalent to tesla, but in most contexts the recognized unit name is tesla, which is why that option is the best fit.

So, the unit used for measuring the strength of the magnetic field in SI familiar to most science contexts is tesla.