JAMB - Physics (2022 - No. 32)

Which expression gives magnetic flux?

qVB sin\(\theta\)

\(\frac{\mu \phi I}{2 \pi r}\)

BA cos \(\theta\)

-N \(\frac{d \phi}{dt}\)

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

Mathematically it is represented as B = Φ/A

where B is magnetic flux density in teslas (T),

Φ is magnetic flux in webers (Wb), and

A is area in square meters (m2).