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  2. Electric field - Wikipedia

    en.wikipedia.org/wiki/Electric_field

    This means that if the source charge were doubled, the electric field would double, and if you move twice as far away from the source, the field at that point would be only one-quarter its original strength. The electric field can be visualized with a set of lines whose direction at each point is the same as those of the field, a concept ...

  3. List of SI electromagnetism units - Wikipedia

    en.wikipedia.org/wiki/List_of_SI...

    Symbol [1] Name of quantity Unit name Symbol Base units E ... electric field strength volt per metre: V/m = N/C kg⋅m⋅A −1 ⋅s −3: D electric displacement field:

  4. List of electromagnetism equations - Wikipedia

    en.wikipedia.org/wiki/List_of_electromagnetism...

    Position vector r is a point to calculate the electric field; r′ is a point in the charged object. Contrary to the strong analogy between (classical) gravitation and electrostatics, there are no "centre of charge" or "centre of electrostatic attraction" analogues. [citation needed] Electric transport

  5. Field strength - Wikipedia

    en.wikipedia.org/wiki/Field_strength

    For example, an electromagnetic field has both electric field strength and magnetic field strength. As an application, in radio frequency telecommunications, the signal strength excites a receiving antenna and thereby induces a voltage at a specific frequency and polarization in order to provide an input signal to a radio receiver.

  6. Electric flux - Wikipedia

    en.wikipedia.org/wiki/Electric_flux

    In electromagnetism, electric flux is the total electric field that crosses a given surface. [1] The electric flux through a closed surface is equal to the total charge contained within that surface. The electric field E can exert a force on an electric charge at any point in space. The electric field is the gradient of the electric potential.

  7. Electromagnetic tensor - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_tensor

    In electromagnetism, the electromagnetic tensor or electromagnetic field tensor (sometimes called the field strength tensor, Faraday tensor or Maxwell bivector) is a mathematical object that describes the electromagnetic field in spacetime.

  8. List of common physics notations - Wikipedia

    en.wikipedia.org/wiki/List_of_common_physics...

    field strength: unit varies depending on context magnetic flux: weber (Wb) electric potential: volt (V) Higgs field work function: psi: wave function: m −3/2: omega: electric resistance ohm: angular frequency: radian per second (rad/s) angular velocity

  9. Electromagnetic field - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_field

    An electric field is produced when the charge is stationary with respect to an observer measuring the properties of the charge, and a magnetic field as well as an electric field are produced when the charge moves, creating an electric current with respect to this observer. Over time, it was realized that the electric and magnetic fields are ...