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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
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 ...
In physics, field strength is the magnitude of a vector-valued field (e.g., in volts per meter, V/m, for an electric field E). [1] For example, an electromagnetic field has both electric field strength and magnetic field strength .
The electric flux is then a simple product of the surface area and the strength of the electric field, and is proportional to the total charge enclosed by the surface. Here, the electric field outside ( r > R ) and inside ( r < R ) of a charged sphere is being calculated (see Wikiversity ).
The matrix form of the field tensor yields the following properties: [3] Antisymmetry: = Six independent components: In Cartesian coordinates, these are simply the three spatial components of the electric field (E x, E y, E z) and magnetic field (B x, B y, B z).
The electric-field integral equation is a relationship that allows the calculation of an electric field (E) generated by an electric current distribution (J). Derivation [ edit ]
The strength and direction of the Coulomb force on a charge depends on the electric field established by other charges that it finds itself in, such that =. In the simplest case, the field is considered to be generated solely by a single source point charge .
If only the electric field (E) is non-zero, and is constant in time, the field is said to be an electrostatic field. Similarly, if only the magnetic field (B) is non-zero and is constant in time, the field is said to be a magnetostatic field. However, if either the electric or magnetic field has a time-dependence, then both fields must be ...