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The laws of classical electromagnetics can be summarized into a concise collection called Maxwell's equations.
In point form, the first of Maxwell’s equations, called Gauss’ law (electric), is a similar expression for the electric field , but its divergence is not zero,
 [4285a]
where,
ρ  Charge
ε_{0}  Permittivity of of vacuum, 8.854 × 10^{−12}
farad/m
The second of Maxwell’s equations, called Gauss’ law (magnetic),
comes directly out of the quantum mechanical description, given by,
 [4285b]
where,
 Magnetic field
The third of Maxwell’s equations, called Faraday’s law, is given by,
 [4285c]
The fourth of Maxwell’s equations, called AmpèreMaxwell law, is a similar expression for the curl of the magnetic field, given by,
 [4285d]
where,
c  = 3 × 10^{8} m/s (the speed of light)
µ_{0}  permeability of vacuum, 4π × 10^{−7} henry/m
