When is the electric flux negative and when is it positive ?

When the electric flux linked with the surface will be positive.

Can electric flux be a negative number?

Define positive electric flux.

In air the value of the total electric flux emitted from unit positive charge is

Define negative electric flux.

Define negative electric flux.

When is the work done by a force is positive and when is it negative ?

Assertion : If the electric flux over a closed surface is negative then the surface encloses net negative charge. Reason : Electric flux is independent of the charge distribution inside the surface.

What is an electric flux ? Under what consitions it can have (i) positive (ii) negative (iii) zero value ?