# What should be the charge on a sphere of radius 4cm , so that when it is brought in contact with another sphere of radius 2cm carrying charge of 10 micro coulomb , there is no transfer of charge from one sphere to other?

30 Points
one year ago
Their both potential must be same, so the answer should be, $Kq1/r1 = Kq2/r2$. on solving you will get 20 micro coloumb.
Their both potential must be the same, so the answer should be, $Kq1/r1 = Kq2/r2$. on solving you will get 20 micro coulomb.