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# Maxwell's Equations in Linear Isotropic Media - Electromagnetic Theory, CSIR-NET Physical Sciences Physics Notes | EduRev

## Physics for IIT JAM, UGC - NET, CSIR NET

Created by: Akhilesh Thakur

## Physics : Maxwell's Equations in Linear Isotropic Media - Electromagnetic Theory, CSIR-NET Physical Sciences Physics Notes | EduRev

The document Maxwell's Equations in Linear Isotropic Media - Electromagnetic Theory, CSIR-NET Physical Sciences Physics Notes | EduRev is a part of the Physics Course Physics for IIT JAM, UGC - NET, CSIR NET.
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Maxwell’s equations are modified for polarized and magnetized materials.
For linear materials the polarization P and magnetization M is given by And the D and B fields are related to E and H by Maxwell’s Equations Inside Matter (Cont’d)

• For polarized materials we have bound charges in addition to free charges • For magnetized materials we have bound currents • In electrodynamics any change in the electric polarization involves a flow of bound charges resulting in polarization current Js Polarization current density is due to linear motion of charge when the Electric polarization changes •  Maxwell’s equations inside matter are written as • In non-dispersive, isotropic media  and µ are timeindependent scalars, and Maxwell’s equations reduces to  • In uniform (homogeneous) medium ε and µ are independent of position, hence Maxwell’s equations reads as  Generally, ε and µ can be rank-2 tensor (3X3 matrices) describing birefringent anisotropic materials.

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