# Math Help - Magnetic Flux & Magnetic Flux Density

1. ## Magnetic Flux & Magnetic Flux Density

can anyone tell me the difference plz

2. Originally Posted by turbod15b
can anyone tell me the difference plz
Magnetic flux density is another name for the magnetic induction, $\vec{B}$. This is also (incorrectly) known as the magnetic field.

A "visual" conception of the magnetic flux is a measure of the number of magnetic field lines passing through a fixed area. A more precise definition would be $\Phi _M = \int \vec{B} \cdot d \vec{A}$, where the integral is over a (usually, but not necessarily, closed) surface.

-Dan

3. thank u