Examples of electric field in the following topics:

 Identify SI units of electric flux
Express the electric flux for uniform and nonuniform electric fields
Electric flux is the rate of flow of the electric field through a given area.
 For a nonuniform electric field, the electric flux is .
 Electric flux is the rate of flow of the electric field through a given area (see ).
 The red arrows for the electric field lines.
 For a nonuniform electric field, the electric flux dΦE through a small surface area dS is given by $d\Phi_E = \mathbf{E} \cdot d\mathbf{S}$ (the electric field, E, multiplied by the component of area perpendicular to the field).
 electric field (noun) A region of space around a charged particle, or between two voltages; it exerts a force on charged objects in its vicinity.

 Identify approximations of the uniform electric field
Describe properties of the uniform electric field
An electric field that is uniform is one that reaches the unattainable consistency of being constant throughout.
 The uniform electric field is an approximation that makes for simple calculations that don't require differential calculus.
 A uniform field is that in which the electric field is constant throughout.
 Equations involving nonuniform electric fields require use of differential calculus.
 Uniformity of an electric field allows for simple calculation of work performed when a test charge is moved across it.
 electric field (noun) A region of space around a charged particle, or between two voltages; it exerts a force on charged objects in its vicinity.
 potential difference (noun) The difference in potential energy between two points in an electric field; the difference in charge between two points in an electrical circuit; voltage.

 Calculate the electric field from the potential difference for a uniform field
Explain the relationship between the electric potential and the electric field
Electric potential and field are related in that potential is a property of the field that describes the field's action.
 The electric field is a measure of force per unit charge; the electric potential is a measure of energy per unit charge.
 The electric field is like any other vector field—it exerts a force based on a stimulus, and has units of force times inverse stimulus.
 In other words, the electric field is a measure of force per unit charge.
 In a more pure sense, without assuming field uniformity, electric field is the gradient of the electric potential in the direction of x:
$E_x=\frac {dV}{dx}$.
 electric field (noun) A region of space around a charged particle, or between two voltages; it exerts a force on charged objects in its vicinity.
 electric potential (noun) The potential energy per unit charge at a point in a static electric field; voltage.

 Identify law that can be used to calculate an electric field created by a point charge
Describe relationship between the sign of the charge and the direction of the field lines
A point charge creates an electric field that can be calculated using Coulomb's law.
 The electric field is a vector field around a charged particle.
 The electric field of a point charge is, like any electric field, a vector field that represents the effect that the point charge has on other charges around it.
 Let's first take a look at the definition of the electric field of a point particle:
The electric field of a positively charged particle points radially away from the charge, while the electric field of a negatively charged particle points toward the particle.
 The above mathematical description of the electric field of a point charge is known as Coulomb's law.
 vector field (noun) a construction in which each point in a Euclidean space is associated with a vector; a function whose range is a vector space

 An electric field may do work on a charged particle, while a magnetic field does no work.
 The electric field is tangent to these lines.
 Like in the case of electric field lines, the magnetic field is tangent to the field lines.
 The curl of the electric force is zero, i.e.:
$\bigtriangledown \times E=0$
A consequence of this is that the electric field may do work and a charge in a pure electric field will follow the tangent of an electric field line.
 The electric field is directed tangent to the field lines.

 A point charge creates an electric field that can be calculated using Coulomb's Law.
 The electric field is a vector field around a charged particle that represents the force that other charged particles would feel when placed near the particle creating the electric field.
 The electric field of a point charge is, like any electric field, a vector field that represents the effect that the point charge has on other charges around it.
 Let's first take a look at the definition of electric field of a point particle,
The electric field of a positively charged particle points radially away from the charge, while the electric field of a negatively charged particle points toward the particle.
 The electric field of a point charge is defined in radial coordinates.
 vector field (noun) a construction in which each point in a Euclidean space is associated with a vector; a function whose range is a vector space

 Electromagnetic waves consist of both electric and magnetic field waves.
 Once in motion, the electric and magnetic fields a charged particle creates are selfperpetuating: timedependent changes in one field (electric or magnetic) produce the other.
 As it travels through space it behaves like a wave, and has an oscillating electric field component and an oscillating magnetic field.
 Once in motion, the electric and magnetic fields created by a charged particle are selfperpetuating—timedependent changes in one field (electric or magnetic) produce the other.
 This means that an electric field that oscillates as a function of time will produce a magnetic field, and a magnetic field that changes as a function of time will produce an electric field.
 electromagnetic wave (noun) A wave of oscillating electric and magnetic fields.

 At static equilibrium, the inside of a conductor will be entirely shielded from an external electric field.
 If conductors are exposed to charge or an electric field, their internal charges will rearrange rapidly.
 Similarly, if a conductor is placed in an electric field, the charges within the conductor will move until the field is perpendicular to the surface of the conductor.
 Negative charges in the conductor will align themselves towards the positive end of the electric field, leaving positive charges at the negative end of the field.
 This occurrence is similar to that observed in a Faraday cage, which is an enclosure made of a conducting material that shields the inside from an external electric charge or field or shields the outside from an internal electric charge or field.

 Thus far, we have looked at electric field lines pertaining to isolated point charges.
 Each will have its own electric field, and the two fields will interact.
 The strength of the electric field depends proportionally upon the separation of the field lines.
 It should also be noted that at any point, the direction of the electric field will be tangent to the field line.
 As vector fields, electric fields exhibit properties typical of vectors and thus can be added to one another at any point of interest.

 Gauss's law relates an electric field to the charge(s) that create(s) it.
 Maxwell added that a changing electric flux can also generate a magnetic field.
 Gauss's law relates an electric field to the charge(s) that create(s) it.
 Maxwell added a second source of magnetic fields in his correction: a changing electric field (or flux), which would induce a magnetic field even in the absence of an electrical current.
 He named the changing electric field "displacement current."
 flux (noun) A quantitative description of the transfer of a given vector quantity through a surface.
In this context, we refer to the electric flux and magnetic flux.