Question

Two identical conduction spheres, one having an initial charge +Q and the other initially uncharged, are brought into contact.
(a) What is the new charge on each sphere?
(b) While the spheres are in contact, a positively chaged rod is moved close to one sphere, causing a redistribution of hte charges on the two spheres so the charge on hte sphere closest to the rod has a charge-Q. What is the charge to the other sphere?

Answer 1

(a) This is due to the reason that the spheres are identical land they share the total charge equally.
(b) The charge on other sphere will be +Q. Because of induction the charge on other sphere will be +Q.