Gauss' Law for Magnetism In Gauss's law the total electric flux through a closed surface is proportional to the total electric charge enclosed by the surface. By analogy, if there were such a thing as a single magnetic charge (magnetic monopole), the total magnetic flux through a closed surface would be proportional to the total magnetic charge enclosed. But no magnetic monopole has ever been observed despite intensive searches. We conclude: The total magnetic flux (DB through any closed surface is always zero. @BdAzo Eqn. 6.1.6