JEE Main & Advanced
Physics
Electrostatics & Capacitance
JEE PYQ-Electrostatics and Capacitance
question_answer
Let a total charge 2Q be distributed in a sphere of radius R, with the charge density given by \[\rho (r)=kr,\]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: [JEE Main 12-4-2019 Afternoon]