Question

what is the difference between electric field and electric flux

Answer 1

electric field = E is a vector that represents electric field strength / intensity due to electric charges in the neighbourhood.  It represents force on a unit charge kept at that point.

Electric flux Φ_E is a scalar quantity.  It is a dot product of  electric field strength and area vector through which the electric field lines pass normally.  It is like the sum (or number) of all electric lines that pass through a cross section area.
         They are related too.
   
$\Phi = \int\limits^{}_{Surface\ S} {\vec{E}.\vec{S}} \, dx$

if E and S are parallel, then  Flux = E S

Answer 2

Explanation:

Electric field is the electric strength at the point due to charge (q). Electric flux is the imaginary field lines produced from +q and terminated at -q charges. ... The electric field is defined as the electric force per unit charge. The electric flux is defined as the electric field times the normal area vector.