A point charge q is situated at a distance r from one end of a thin conducting rod of length L having a charge Q (uniformly distributed along its length). The magnitude of electric force between the two, is ...............
Options:
(a) `(2kqQ)/( r(r + L))`
(b) `(kqQ)/( r(r + L))`
(c) `(kqQ)/( r(r – L))`
(d) `(kQ)/( r(r + L))`