A charged oil drop is suspended in a uniform filed of `3xx10^4 v//m` so that it neither
Channel: Doubtnut
Date: 2020-07-05

A charged oil drop is suspended in a uniform filed of `3xx10^4 v//m` so that it neither falls nor rises. The charge on the drop will be (Take the mass of the charge `=9.9xx10^-15kg` and `g=10m//s^2`)