Q)
(chatquestion)...Let a total charge 20 be distributed in a sphere of radius R.
with the charge density given by p(r)= kr, where r is the
distance from the centre. Two charges A and B, of- Q each,
are placed on diametrically opposite points, at equal distance
a, from the centre. If A and B do not experience any force,
then
(Main 2019, 12 April II)
6.
3R
(b) a =
2/4
(a) a = 8-1/4R
(c) a = 2/4R
(d) a = R / 3
...
