# Best answer: Is magnetic flux density constant?

Contents

Electric flux out of a closed surface depends only on the charge enclosed. So, intuitively, the number of flux lines crossing unit area is constant regardless of the material. … Without the magnetic material, the flux density at a point is 2 lines/m2.

## What is magnetic flux density?

magnetic flux density. A vector quantity measuring the strength and direction of the magnetic field around a magnet or an electric current. Magnetic flux density is equal to magnetic field strength times the magnetic permeability in the region in which the field exists.

## Is flux density magnetic field strength?

Another way to put it is that magnetic field strength (H in amperes per meter) is the amount of magnetizing force. … Magnetic flux density (B in tesla or Weber/m2) is the amount of magnetic force induced on the given body due to the magnetizing force H.

## How do you calculate magnetic flux density?

The magnetic field vector B is defined by the force it would apply to a charge moving in it. B = F/qv, so the units are (N *s) / (C *m), which we call a Tesla, or T. This is also called flux density. Flux is then given by B*A, so it is in T*m^2, which we also call a Weber.

## What is unit of magnetic flux?

The SI derived unit of magnetic flux density is the tesla, which is defined as a volt second per square meter.

## 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 / Ae teslas. Thus 1 weber per square metre = 1 tesla. Flux density is related to field strength via the permeability. B = μ × H.

## What is the flux density at a point 3 cm?

Answer: 4.69*10^-5.

## What is difference between B and H?

B is magnetic flux density, whereas H is magnetic field intensity.

## What is meant by motional EMF?

An emf induced by motion relative to a magnetic field B is called a motional emf and is given by. emf = Bℓv (B,ℓ, and v perpendicular) where ℓ is the length of the object moving at speed v relative to the field.

## What is difference between magnetic flux and magnetic flux density?

The amount of magnetic flux a magnet displays is a direct result of the material that makes up the magnet. The magnetic flux density is a product of the magnetic flux and the area that this flux is present within.

## What is flux flow?

Flux as flow rate per unit area. In transport phenomena (heat transfer, mass transfer and fluid dynamics), flux is defined as the rate of flow of a property per unit area, which has the dimensions [quantity]·[time]−1·[area]−1. The area is of the surface the property is flowing “through” or “across”.

## When magnetic flux is maximum?

The magnetic flux through the plane of the coil has its maximum value when this plane is perpendicular to the magnetic field lines between the poles. As the coil turns and the plane of the coil becomes parallel to the field lines, the flux becomes zero.

## What is magnetic flux Class 10?

Magnetic flux refers to the total number of magnetic field lines penetrating any surface placed perpendicular to the magnetic field. It is calculated as the product of the average magnetic field strength and the perpendicular area it penetrates.

## What is flux and its unit?

Electric Flux: Electric flux is a number of electric lines of forces which posses through any cross sectional area when the cross sectional area in kept perpendicular to the direction of electric field. Electric flux is scalar quantity which is denoted by ΦE. S.I. Unit is Neutron(metre2/ coulomb) NM˙2/C.

## What is the SI unit of self inductance?

The henry (symbol: H) is the SI derived unit of electrical inductance. If a current of 1 ampere flowing through a coil produces flux linkage of 1 weber turn, that coil has a self inductance of 1 henry.

## What is the SI unit of Weber?

Weber, unit of magnetic flux in the International System of Units (SI), defined as the amount of flux that, linking an electrical circuit of one turn (one loop of wire), produces in it an electromotive force of one volt as the flux is reduced to zero at a uniform rate in one second. 