A drop of `10^(-6)` kg water carries `10^(-6) C` charge. What electric field should be applied to balance its weight (assume `g = 10 ms^(-2)`)

Find the magnitude of electric field which will jut balance a deutron of mass 3.2 xx 10^-27 Take g = 10 ms^-2

In Millikan's oil drop experiment, an oil drop mass 60 xx 10^(-6) kg is balanced by an electric field of 10^(6) V//m . The charge in coulomb on the drop, assuming g = 10 m//s^(2) is

A charged water drop of weight 4 xx 10^(-18) kg and charge 1.6 xx 10^(-19) C is stable in an electric field . What is the intensity of electric field

Two positively charged particles each of mass is 9 xx 10^(-30)kg and carrying a charge of 1.6 xx 10^(-19)C are placed at a distance .r. apart. If each experiences a force equal to its weight, the value of r is (g = 10 ms^(-2))