Electric potential is given by

$V = 6x – 8x{y^2} – 8y + 6yz – 4{z^2}$

Then electric force acting on $2\,C$ point charge placed on origin will be……$N$

Which of the following is true for the figure showing electric lines of force? ($E$ is electrical field, $V$ is potential)

If potential (in volts) in a region is expressed as $V (x,y,z) =6xy-y+2yz $ the electric field (in $N/C$) at point $(1, 1, 0)$ is 

The electric potential in a region is represented as $V = 2x + 3y -z$ ; then the expression of electric field strength is

Two plates are $2\,cm$ apart, a potential difference of $10\;volt$ is applied between them, the electric field between the plates is………$N/C$