# Quick Answer: What Is B And H In Physics?

## What is the unit of flux?

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

## What is inductance formula?

Δ (Greek D – Delta) denotes a difference or change in a property. So the formula describes the back emf as depending on the inductance (in henries) multiplied by the rate of change in current (in amperes per second).

## What is flux cutting?

When a magnet falls through a long metal tube, the field lines of the magnet cut the tube. This is flux cutting. When the flux of the primary coil in a transformer changes, the flux linked with the secondary coil changes. This is flux linking.

## What is magnetic flux formula?

The magnetic flux (often denoted Φ or ΦB) through a surface is the component of the magnetic field passing through that surface. In the most general form, magnetic flux is defined as ΦB=∬AB⋅dA Φ B = ∬ A B ⋅ d A . It is the integral (sum) of all of the magnetic field passing through infinitesimal area elements dA.

## What is magnetic flux and magnetic flux density?

Magnetic Flux Density is amount of magnetic flux through unit area taken perpendicular to direction of magnetic flux. Flux Density (B) is related to Magnetic Field (H) by B=μH. It is measured in Webers per square meter equivalent to Teslas [T].

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

The most significant difference between the magnetic field and the magnetic flux is that the magnetic field is the region around the magnet where the moving charge experiences a force, whereas the magnetic flux shows the quantity or strength of magnetic lines produced by the magnet.

## What is H in magnetic field?

The definition of H is H = B/μ − M, where B is the magnetic flux density, a measure of the actual magnetic field within a material considered as a concentration of magnetic field lines, or flux, per unit cross-sectional area; μ is the magnetic permeability; and M is the magnetization. …

## 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 SI unit of magnetic flux?

The tesla (symbol T) is the derived SI unit of magnetic flux density, which represents the strength of a magnetic field. One tesla represents one weber per square meter.

## 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 induced emf?

To be completely accurate, if the magnetic flux through a coil is changed, a voltage will be produced. This voltage is known as the induced emf. The magnetic flux is a measure of the number of magnetic field lines passing through an area. … If the flux changes, an emf will be induced.