In Millikan's experiment, an oil drop of radius 1.64μm1.64μm and density 0.851 g/cm30.851 g/cm3 is suspended in chamber C (Fig. 22-16) when a downward electric field of 3.20×105 N/C3.20×105 N/C is applied. (a) Find the charge on the drop, in terms of ee. (b) If the drop had an additional electron, would it move upward or downwa
