Units:

1

• Units
• Charge Q (CoulombA.s)
• Charge density ? (C/m3)
• Electric Field E (V/m)
• Magnetic Field H (A/m)
• Electric Displacement D (C/m2)
• Magnetic Induction B (Tesla V.s/m2)
• Current I (A)
• Current density J(A/m2)

2
Force acting upon charge Q moving with velocity v
Maxwell Equations
Material Equations
Vacuum Impedance
Speed of light inVacuum
3
Wave equation
4
Plane monochromatic waves
E0 constant amplitude
Wave front surface of constant phase.
?/k??vp phase velocity vp is parallel to k
5
Complex representation
In complex representation
Maxwell Equations
6
Wave equation for plane wave
Solution-dispersion relation
7
Relations between E and H
??0/n impedance of dielectric.
8
Reflection at plane interface at normal incidence
9
Energy and Power Density of Electro Magnetic Wave
Power density Poynting vector
-unit ray vector.