Constitutive Relations¶
A constitutive relation is a relation between two or more physical quantities that is specific to a material or substance or field, and approximates its response fields or forces. In electromagnetism, it is necessary to specify the constitutive relations between the electric field \(\vec E\) and the electric displacement field \(\vec D\), as well as one between the magnetic field \(\vec B\) and the magnetizing field \(\vec H\), to be able to do calculations regarding the Maxwell’s equations.
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