The Field and Material Vectors - wykład

The Field and Material Vectors The names, usual symbols, and Standard International units for the four vectors used to
describe electromagnetic fields in a general medium are
E electric field intensity Vm−1
H magnetic field intensity Am−1
D electric flux density Cm−2
B magnetic flux density Wbm−2
The units of magnetic flux density B have the alternative name of Tesla, for which
the abbreviation is T.
The names, usual symbols, and Standard International units for the vectors used to
describe the state of a dielectric medium and the state of a magnetic medium respectively
are
P polarisation Cm−2
M magnetisation Am−1
The fully general relations between the above six vectors are
(i) D = ²0E + P by definition
(ii) B = μ0(H+M) by definition
The values of the magnetic permeability and the dielectric permittivity of free space
are in Standard International units
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