Question

Two conducting spheres of radii `5 cm` and `10 cm` are given a charge of `15mu F` each. After the two spheres are joined by a conducting wire, the charge on the smaller sphere is
A. `5 muC`
B. `10 muC`
C. `15 muC`
D. `20 muC`

Answer 1

Correct Answer - B
Charge on smaller sphere
`=` Total charge `((r_(1))/(r_(1) + r_(2))) = 30 ((5)/(5 + 10)) = 10mu C`