Quantities and Units

Quantity	Unit
Characterisation of exposure fields
frequency	hertz (Hz)
wavelength	metre (m)
electrical field strength (external)	volt per metre (V m ^-1)
magnetic field strength	ampere per metre (A m ^-1)
magnetic flux density	tesla (T)
power density	watt per square metre (W m ^-2)
Dosimetric quantities
current density	ampere per square metre (A m ^-2)
specific energy absorption rate (SAR)	watt per kilogram (W kg ^-1)
electric field strength (internal)	volt per metre (V m ^-1)