Question

how do you calculate flux?

Answer 1

gauss's law is what you want. it is very complex, but in it's simplest form the equation is:
\[\int\limits_{}^{} E * dA = \frac{Q_{enc}}{\epsilon_0}\]

Answer 2

electric flux can be calculated using GUASS LAW,whereas magnetic flux can be caculated using Ampere,s law

Answer 3

(EMF) (\[DeltaT\)/ the number of loops in the coil

Answer 4

Actually, the definition of flux is mathematical and independent of electromagnetism laws (for instance Gauss' law). It is defined as integral operator that acts on a vector field, or the integral of a quantity named flux density.

\[\text{flux}=\int\limits_\text{S} \vec{V}\cdot\hat{n}dA\]

where S is the surface which you're analysing the flux density and n is the unity vector perpendicular to the surface of integration and V is the vector field.