# A bead with a mass of 0.040 g and a charge of 10 nC is free to slide on a vertical rod. At the base of the rod is a fixed 20 nC charge.n equilibrium, at   what height above the fixed charge does the bead rest?

Question

A bead with a mass of 0.040 g and a charge of 10 nC is free to slide on a vertical rod. At the base of the rod is a fixed 20 nC charge.n equilibrium, at

what height above the fixed charge does the bead rest?