Electric line of force is the imaginary line on which at any point tangent show the direction of fre positive charge properties of electric lines of force.

(1) It is directly proportional to amount of charge

(2) It emit form positive charge and enter in negative charge

(3) It does not exist in metal or equipotential space

(4) It always perpendicular to metal surface and equipotential surface

(5) It always move high potential to low potential

(6) It never intersect to each other

(7) Uniform electric field show by well spaced straight line

If a point charge $+q$ is projected in a uniform electric field   $E$ , which is conservative field, in a direction opposite to the field ,then-