ElectrostaticsHard
Question
You are given an arrangement of three point charges q, 2q and xq separated by equal finite distances so that electric potential energy of the system is zero. Then the value of x is :
Options
A.− 
B.
C.
D.
Solution
P.E. of system = 
= 0 where a is distance between charges.
or 2 + 3x = 0 ∴ x = −
= 0 where a is distance between charges.or 2 + 3x = 0 ∴ x = −
Create a free account to view solution
View Solution FreeMore Electrostatics Questions
Two equal negative charges - q, are placed at points (0,a) and (0,-a) on y axis, one positive charge q at rest is left t...A bullet of mass m and charge q is fired towards a solid uniformly charged sphere of radius R and total charge +q. If it...A holllow metallic sphere is charged by 3.2 × 10−19 C. If radius of sphere is 10 cm then electric potential a...A charge q is placed at the centre of the cubical vessel (with one face open) as shown in figure. The flux of the electr...Let E1(r), E2(r) and E3(r) be the respective electric fields at a distance r from a point charge Q, an infinitely long w...