## What is flux formula?

If the electric field is uniform, the electric flux (ΦE) passing through a surface of vector area S is: ΦE = E⋅S = EScosθ, where E is the magnitude of the electric field (having units of V/m), S is the area of the surface, and θ is the angle between the electric field lines and the normal (perpendicular) to S.

## How do you calculate flux?

Know the formula for electric 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 meant by flux?

a flowing or flow. the flowing in of the tide. continuous change, passage, or movement: His political views are in a state of flux. Physics. the rate of flow of fluid, particles, or energy.

## What does flux mean in physics?

Flux describes any effect that appears to pass or travel (whether it actually moves or not) through a surface or substance. A flux is a concept in applied mathematics and vector calculus which has many applications to physics.

## What is unit of flux?

The SI unit of magnetic flux is the weber (Wb; in derived units, volt–seconds), and the CGS unit is the maxwell. Magnetic flux is usually measured with a fluxmeter, which contains measuring coils and electronics, that evaluates the change of voltage in the measuring coils to calculate the measurement of magnetic flux.

## What is flux with example?

Common fluxes are: ammonium chloride or resin acids (contained in rosin) for soldering copper and tin; hydrochloric acid and zinc chloride for soldering galvanized iron (and other zinc surfaces); and borax for brazing, braze-welding ferrous metals, and forge welding.

## 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.

## What’s flux in welding?

Welding flux is a combination of carbonate and silicate materials used in welding processes to shield the weld from atmospheric gases. When the heat of the weld zone reaches the flux, the flux melts and outgasses. The gases produced push the atmospheric gas back, preventing oxidation (and reactions with nitrogen).

## What is the difference between flux and flow?

As nouns the difference between flow and flux is that flow is the movement of a fluid while flux is the act of flowing; a continuous moving on or passing by, as of a flowing stream.

## What is main flux?

2.1. When the dynamo is connected to a load, current flows in the armature windings. This results in an armature flux. The main flux (fig. The mixture of armature flux and main flux results in the neutral line shifting in the direction of rotation.

## What is flux used for?

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 motional EMF?

About Transcript. 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.

## What does negative flux mean?

Remember our convention for flux orientation: positive means flux is leaving, negative means flux is entering. In this example, water is falling downward, or entering the tube. This means the top surface has negative flux (it appears to be siphoning up water).

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