The strength of the electrostatic force acts on this charge is F = Â 0.09 N.
Explanation:
The force on the electric field can be calculated by using the formula,
             E = F / q
             F = -q [tex]\times[/tex] E
Given q = - 2.0 [tex]\times[/tex] 10^-6, Â Â Â Â Â Â Â Â Â E = 4.5 [tex]\times[/tex] 10^4.
        electrostatic force = (2.0 [tex]\times[/tex] 10^-6)[tex]\times[/tex](4.5 [tex]\times[/tex] 10^4)
                      F  = 0.09 N.