Tesla

Definition

The tesla (T) is the SI unit of magnetic flux density, representing the strength of a magnetic field. One tesla is defined as one weber per square meter.

5 Must Know Facts For Your Next Test

1. 1 tesla equals $1 \, \text{Wb/m}^2$ (one weber per square meter).
2. A strong refrigerator magnet has a field of about $0.001$ T.
3. The Earth's magnetic field at its surface is approximately $31 \mu T$ to $65 \mu T$ (microteslas).
4. $10^4$ gauss is equivalent to 1 tesla.
5. MRI machines typically use magnetic fields between 1.5 T and 3 T.

Review Questions

• What is the SI unit for measuring the strength of a magnetic field?
• How many gauss are equivalent to one tesla?
• What range does the Earth's magnetic field fall into in microteslas?

Related terms

Magnetic Flux: The measure of the quantity of magnetism, taking into account the strength and extent of a magnetic field, typically measured in webers.

Weber (Wb): The SI unit of magnetic flux, where one weber represents the amount of flux that, linking a circuit of one turn, produces an electromotive force of one volt as it is uniformly reduced to zero within one second.

Gauss:

A unit used to measure small-scale magnetic fields, where one gauss equals $10^{-4}$ tesla.