Fluxes and currents are representations. Any quantity that can be written as the surface intergral of a vector field is called the flux of that field through that surface. So, for instance, the electric current I, is the flux of the current density vector J.
Is current a flux?
Given a current such as electric current—charge per time, current density would also be a flux according to the transport definition— charge per time per area .
What is flux in terms of current?
solenoid: A coil of wire that acts as a magnet when an electric current flows through it. flux: The rate of transfer of energy (or another physical quantity) through a given surface , specifically electric flux or magnetic flux.
Sample Answer: The magnetic flux density through a coil is directly proportional to current . When the current increases the magnetic flux density will increase.
What is flux equal to?
The total of the electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity . The electric flux through an area is defined as the electric field multiplied by the area of the surface projected in a plane perpendicular to the field.
What is flux and example?
Flux is a chemical purifying agent, flowing agent or cleaning agent. Most commonly, it is used in metal joining and metallurgy. Some examples of flux include: Ammonium chloride . Zinc chloride .
What is flux density formula?
Flux density is simply the total flux divided by the cross sectional area of the part through which it flows – B = Φ / A e teslas . Thus 1 weber per square metre = 1 tesla. Flux density is related to field strength via the permeability. B = μ × H.
How does current affect flux?
Hans Christian Oersted discovered that an electric current can produce a magnetic field. The more current you have the more flux you generate . ... When the coil current varies then that will alter the flux and, says Faraday, if the flux changes then you get an induced voltage.
What is motional emf?
An emf induced by motion relative to a magnetic field is called a motional emf. This is represented by the equation emf = LvB , where L is length of the object moving at speed v relative to the strength of the magnetic field B.
How do I calculate emf?
The emf is equal to the work done on the charge per unit charge (ε=dWdq) when there is no current flowing. Since the unit for work is the joule and the unit for charge is the coulomb, the unit for emf is the volt (1V=1J/C).
Can flux be negative?
The negative flux just equals in magnitude the positive flux , so that the net, or total, electric flux is zero. If a net charge is contained inside a closed surface, the total flux through the surface is proportional to the enclosed charge, positive if it is positive, negative if it is negative.
How do you find flux?
- The Electric Flux through a surface A is equal to the dot product of the electric field and area vectors E and A.
- The dot product of two vectors is equal to the product of their respective magnitudes multiplied by the cosine of the angle between them.
What is flux made of?
Flux, in metallurgy, any substance introduced in the smelting of ores to promote fluidity and to remove objectionable impurities in the form of slag. Limestone is commonly used for this purpose in smelting iron ores. Other materials used as fluxes are silica, dolomite, lime, borax, and fluorite.
What is flux and its types?
It is the substance added to molten metals to bond with impurities that can be readily removed. Types of flux: Fluxes are of two types, viz, acidic flux and basic flux . (a) Acidic flux: It is an acidic oxide (oxide of a non-metal) like SiO 2 , P 2 O 5 , B 2 O 3 (from borax).
What is flux in simple words?
Flux is the presence of a force field in a specified physical medium , or the flow of energy through a surface. In electronics, the term applies to any electrostatic field and any magnetic field . Flux is depicted as “lines” in a plane that contains or intersects electric charge poles or magnetic poles.
What disease is flux?
1 : diarrhea in which blood is mixed with the intestinal discharge. 2 : swine dysentery.
