Electric intensity

Electric field intensity is defined as the strength of an electric field at any point in the space. It is equal to the Electric force per unit charge experienced by a test charge placed at that point. The unit of measurement is the volt/meter or Newton/Coulomb. This physical quantity has dimensions as MLT(-3)A(-1).

Electric Field Intensity Is defined as :-"The electric field intensity due to point charge at any point in the electric field is defined as the electrostatic force exerted by it on a unit positive charge placed at that point."

Field strength

In physics, field strength or intensity means the magnitude of a vector-valued field. For example, electromagnetic field results in both electric field strength and magnetic field strength. As an application, in radio frequency telecommunications, the signal strength excites a receiving antenna and thereby induce a voltage at a specific frequency and polarization in order to provide an input signal to a radio receiver. Field strength meters are used for such applications as cellular, broadcasting, wi-fi and a wide variety of other radio-related applications.

See also

References

Electric field

The electric field is a component of the electromagnetic field. It is a vector field and is generated by electric charges or time-varying magnetic fields, as described by Maxwell's equations. The concept of an electric field was introduced by Michael Faraday.

Definition

The electric field at a given point is defined as the (vectorial) force that would be exerted on a stationary test particle of unit charge by electromagnetic forces (i.e. the Lorentz force). A particle of charge would be subject to a force .

Its SI units are newtons per coulomb (N⋅C⁻¹) or, equivalently, volts per metre (V⋅m⁻¹), which in terms of SI base units are kg⋅m⋅s⁻³⋅A⁻¹.

Sources of electric field

Causes and description

Electric fields are caused by electric charges or varying magnetic fields. The former effect is described by Gauss's law, the latter by Faraday's law of induction, which together are enough to define the behavior of the electric field as a function of charge repartition and 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.