# The Control of Electromagnetic Fields at Work Regulations 2016, Paragraph 1

Extent: E+W+S

In this Schedule—
“contact current (IC)” is the current created when a person comes into contact with an object in an electromagnetic field, expressed in ampères (A);
“external electric field strength (E)” is a vector quantity corresponding to the force exerted on a charged particle in the environment, irrespective of its motion in space, expressed in volts per metre (Vm-1);
“internal electric field strength (E)” is a vector quantity corresponding to the force exerted on a charged particle inside the human body, irrespective of its motion in space, expressed in volts per metre (Vm-1);
“limb current (IL)” is the current induced in the limbs of a person exposed to electromagnetic fields in the frequency range from 10 MHz to 110 MHz, expressed in ampères (A);
“magnetic flux density (B)” is a vector quantity resulting in a force that acts on moving charges, expressed in tesla (T);
“power density (S)” is the radiant power incident perpendicular to a surface, divided by the area of the surface, expressed in watts per square metre (Wm-2);
“specific energy absorption (SA)” is the energy absorbed per unit mass of biological tissue, expressed in joules per kilogram (Jkg-1);
“specific energy absorption rate (SAR)” is the rate at which energy is absorbed per unit mass of body tissue, expressed in watts per kilogram (Wkg-1).

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Source: https://www.legislation.gov.uk/uksi/2016/588/schedule/part/1/paragraph/1 (the official version)
Page: https://openlegislation.uk/control-of-electromagnetic-fields-at-work-regulations-2016/schedule/part-1/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.