A, B and C are three indentical metallic spheres having positive, negative and positive charges, respectively. The deficiency or excess of electrons present in A, B and C are 10, 20 and 31, respectively. Initially the spheres A and B are brought in contact and then B and C are brought together. Determine the magnitude and nature of charge present on the bodies after bringing them in contact. (Take charge of electorn as `1.6xx10^(-19)C` ).

Explanation

(i) Charge each conductor when they brought together `= (q_(1)+q_(2))/(2)` where `q_(1)` and `q_(2)` are the charge on each body.
(ii) `A rarr -8 xx 10^(-19)C`
B and C + 20.8`xx10^(-19)C`