1.3 Maxwell's equations

1.1 Displacement current
1.3 Maxwell's equations

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

The basic principle of electromagnetism can be formulated in terms of four fundamental equations known as Maxwell's equations.

Four Maxwell's equations are:

1. Gauss's law for electrostatics $$\oint {\overrightarrow E .\;d\overrightarrow s } = \frac{q}{{{\varepsilon _0}}}$$

2. Gauss's law for magnetism $$\oint {\overrightarrow B .\;d\overrightarrow s } = 0$$

3. Faraday's law of electromagnetic induction $$\oint {\overrightarrow E .\;d\overrightarrow l } = - \frac{{d{\phi _B}}}{{dt}}$$

4. Maxwell-Ampere's circuital law $$\oint {\overrightarrow B .\;d\overrightarrow l } = {\mu _0}\left[ {I + {\varepsilon _0}\frac{{d{\phi _E}}}{{dt}}} \right]$$