11 Facts About Electric field

An electric field is the physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them.

Electric field is defined as a vector field that associates to each point in space the force per unit of charge exerted on an infinitesimal positive test charge at rest at that point.

The derived SI unit for the electric field is the volt per meter, which is equal to the newton per coulomb .

Electric field is defined at each point in space as the force per unit charge that would be experienced by a vanishingly small positive test charge if held stationary at that point.

Electric field can be visualized with a set of lines whose direction at each point is the same as the field's, a concept introduced by Michael Faraday, whose term 'lines of force' is still sometimes used.

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The Electric field lines are a representative concept; the Electric field actually permeates all the intervening space between the lines.

One way of stating Faraday's law is that the curl of the electric field is equal to the negative time derivative of the magnetic field.

However, since the magnetic field is described as a function of electric field, the equations of both fields are coupled and together form Maxwell's equations that describe both fields as a function of charges and currents.

In general the electric field cannot be described independently of the magnetic field.

Uniform field is one in which the electric field is constant at every point.

Electric field given by Coulomb's law for a point charge particle at rest is found to preserve the form of Gauss's law under Lorentz transformation consistent with the first postulate of relativity.