going in right direction electric field

[cowgiljl]

The question is a charge object has a mass of 9.11E-31 kg and a charge of 1.602E-19 coul. Calculate the strength of the electric field that would provide a force equal to the weight of the charged object

E = Fe/m 1.602E-19 / 9.11E-31

E = 1.76E 11

joe

[Doc Al]

The force on a charge in an electric field is: F = qE. Set that equal to the weight of the object, which is mg. So qE = mg, thus E = mg/q.