Question

What is magnetic flux?​

Answer 1

Answer:

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In physics, specifically electromagnetism, the magnetic flux through a surface is the surface integral of the normal component of the magnetic field B over that surface. It is usually denoted Φ or ΦB. The SI unit of magnetic flux is the weber, and the CGS unit is the maxwell. 

Answer 2

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The magnetic flux through any surface placed in a magnetic field is the total number of magnetic lines of force crossing this surface normally. It is measured as the product ot the component ot the magnetic field normal to the surface and the surface area.

Magnetic flux is a scalar quantity, denoted by ø or øB.

If a uniform magnetic field B passes normally through a plane surface area A, then the magnetic flux through this area is

ø = BA

If the field B makes angle with the normal drawn to the area A, then the component of the field normal to this area will be B cos $\theta$,

So that,

ø = B cos $\theta$x A

ø = BAcos$\theta$

ø = B.A

Hence, the direction of vector A is the direction of the outward drawn normal to the surface.

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