JEE Main 2024 Physics question
Two charges q and 3q are separated by a distance 'r' in air. At a distance x from charge q, the resultant electric field is zero. The value of x is :
Answer: (C)
Solution
The field is zero between the charges where kq/x² = k(3q)/(r − x)². So (r − x) = √3 x and x = r/(1 + √3).