One of the issues that can often be found in the vast global network - is much different vortex electric field by electrostatic.In fact, the difference dramatically.In electrostatics the interaction of two (or more) of the charges and, importantly, the line intensity of these fields are not closed.But the vortex electric field is subject to completely different laws.Consider this question in more detail.
One of the most common devices faced by almost everyone - is the counter account of consumption of electrical energy.Do not advanced electronic model, and the "old", which uses an aluminum rotating disk.It "causes" to rotate the induction electric field.As we know, in any conductor, and a large amount of weight (not wire) that permeates the changing magnetic flux, according to Faraday's law an electromotive force and the electric current, called vortex.Note that in this case, absolutely does not matter whether the magnetic field is changed or it moves the conductor.In accordance with the law of electromagnetic induction in the mass of the conductor are closed loops form swirls, which are circulating currents.Their orientation can be determined by using the rule of Lenz.It states that the magnetic field of the current is directed so as to compensate for any change (both reduction and increasing) the initiation of the external magnetic flux.The disc rotates counter is due to the interaction of the external magnetic field generated by currents that occur within it.
How does vortex electric field associated with all of the above?In fact, there is a connection.All the matter in terms.Any change in the magnetic field creates a vortex electric field.Then everything is simple: the conductor generated EMF (electromotive force), and a current in the circuit.Its value depends on the rate of change of the main flow, for example, faster than the line conductor intersects the field intensity, the greater the current.The peculiarity of this field is that its lines of tension have neither beginning nor end.Sometimes it is compared with the configuration of a solenoid (cylinder with the turns of wire on its surface).Another schematic representation for explaining uses magnetic induction vector.Around each of these lines are the electric field strength, indeed, reminiscent of the vortices.An important feature: in the latter example is true when the intensity of the magnetic flux changes.If the "look" of induction vector, then with an increase in the flow lines of the vortex field rotates clockwise.
property induction is widely used in modern electrical engineering: it gauges and AC motors, and electron accelerators.
list the basic properties of the electric field:
- this type of field is inextricably linked to the carriers;
- force acting on a charge carrier, created the field;
- as the distance from the carrier field weakens;
- characterized by lines of force (or, what is also true, lines of tension).They aim, therefore represent a vector quantity.
To study the properties of the field at each point using an arbitrary test (test) charge.In this way tend to pick up a "probe" to be made to the system does not affect the action of forces.Usually it is a reference charge.
Note that Lenz rule allows to calculate the electromotive force only, but the value of the vector field and its direction is determined by another method.It is a system of Maxwell's equations.
