Question

If the net charge enclosed in a Gaussian surface is positive, then what is the nature of total electric flux through the surface?

Answer 1

Answer:

Positive charges give out electric field lines, negative charges take them in. If you make a gaussian surface around a charge distribution and find that more lines exit the surface than leave, you know it is a net positive charge.

Answer 2

Answer:

The negative flux just equals in magnitude the positive flux, so that the net, or total, electric flux is zero. If a net charge is contained inside a closed surface, the total flux through the surface is proportional to the enclosed charge, positive if it is positive, negative if it is negative.