Question

Explain measurement of flux with examples.

Answer 1

Let us get some basic ideas about flux. The presence of a force field in a physical medium, or the flow of energy across a surface, is referred to as flux. Flux is shown as "lines" in a plane that intersect or contain electric charge poles or magnetic poles. Flux lines are invisible and ethereal. They can, however, be observed indirectly and have observable impacts.

Complete step by step solution:
Magnetic flux is typically measured with a fluxmeter, which consists of measuring coils and electronics that calculate magnetic flux measurement by evaluating the change in voltage in the measuring coils.
The Weber (named after German physicist and co-inventor of the telegraph Wilhelm Weber) is the SI unit of magnetic flux, with the symbol $Wb$ .
The magnetic flux may be measured with a magnetometer in the same way as the magnetic field because it is simply a way of describing the magnetic field in a certain area.
Consider a small magnetometer probe that is moved around (without spinning) inside an $0.5{m^2}$ area near a huge sheet of magnetic material and displays a consistent reading of $5mT$ . The magnetic flux through the area is then
$(5 \times {10^{ - 3}}T) \times (0.5{m^2}) = 0.0025Wb$ .
It would be necessary to find the average reading if the magnetic field reading changed with position.

Note: The magnetic flux density is a related word that you may come across. $Wb/{m^2}$ is the unit of measurement. We could easily declare the units of flux density in Tesla because we are dividing flux by area. In reality, the phrase magnetic flux density is sometimes used interchangeably with the magnetic field magnitude.