how many electrons need to be removed from a metal sphere of radius 0.03 m so that it acqires a charge of 1 x 10^-15 C ? e is 1.6 x 10^-19 C
1e = 1.6 X 10^-19C
? e = 1X 10^-15
= 1:1.6 X 10^-19C: : ? : 1X 10^-15
= 1X 10^-15 / 1.6 X 10^-19
= 6.25 X 10^ 3
? e = 1X 10^-15
= 1:1.6 X 10^-19C: : ? : 1X 10^-15
= 1X 10^-15 / 1.6 X 10^-19
= 6.25 X 10^ 3