What is the strength of an electric field that will balance the weight of a 9.6 g plastic sphere that has been charged to -9.2 nC ? Express your answer to two significant figures and include the appropriate units.

Respuesta :

The strength of the electric field is 1.02 [tex]\times[/tex] 10^10.

Explanation:

The ratio of electric force per unit charge is defined as the electric. The electric field is always in a positive direction. The formula for finding the electric field is given by

                             E = F / q

where F represents the force,

          q represents the charge,

          E represents the electric field.

Given mass m = 9.6 g,         charge q = -9.2 nC = -9.2 [tex]\times[/tex] 10^-9

 First we can find force using the formula,

                             F = mg

                                = 9.6 [tex]\times[/tex] 9.8

                             F = 94.08 N.

Now we can find electric field E = F / q

                                                     = 94.08 / (-9.2 [tex]\times[/tex] 10^-9)

                                                  E = 1.02 [tex]\times[/tex] 10^10.