Physics > Electromagnetic Waves > 1.0 Introduction
Electromagnetic Waves
1.0 Introduction
2.0 Electromagnetic Waves
2.1 Properties of electromagnetic waves
2.2 Production of electromagnetic waves
2.3 Energy density of electromagnetic waves
2.4 Intensity of electromagnetic waves
2.5 Momentum of electromagnetic waves
2.6 Radiation pressure
2.7 Poynting vector
2.8 Electromagnetic spectrum
1.1 Displacement current
2.2 Production of electromagnetic waves
2.3 Energy density of electromagnetic waves
2.4 Intensity of electromagnetic waves
2.5 Momentum of electromagnetic waves
2.6 Radiation pressure
2.7 Poynting vector
2.8 Electromagnetic spectrum
It is that current which comes into play in the region, wherever the electric field and hence the electric flux is changing with time.
The displacement current is given by,
$${I_D} = {\varepsilon _0}\frac{{d{\phi _E}}}{{dt}}$$
where,
${\varepsilon _0}$: Permittivity of free space
$\frac{{d{\phi _E}}}{{dt}}$: Rate of change of electric flux
