can we only have uniform electric field in flux only
Electric fields can be uniform or non-uniform. In a uniform field, the electric flux lines are parallel and equally spaced.
m^2 times 3 equals 6 area cm ^2 of the circle
No, a uniform electric field can exist not only in flux but also in empty space or around other charged objects. The concept of electric flux is related to how electric field lines pass through a surface.
Electric flux is a measure of the total number of electric field lines passing through a given surface. It depends on the strength and direction of the electric field, as well as the size and shape of the surface.
In the case of a uniform electric field, all the electric field lines are parallel and evenly spaced, resulting in a constant electric field magnitude and direction throughout the region. This means that the electric flux passing through any closed surface can be calculated as the product of the electric field strength and the surface area projected perpendicular to the field lines.
So while a uniform electric field can exist without reference to flux, the concept of electric flux helps us quantify how electric field lines interact with different surfaces.