JEE Main 2022 Physics question
Two identical metallic spheres A and B when placed at certain distance in air repel each other with a force of F. Another identical uncharged sphere C is first placed in contact with A and then in contact with B and finally placed at midpoint between spheres A and B. The force experienced by sphere C will be :
Answer: (2)
Solution
Let = = q, so . After C touches A, A and C each carry q/2. After C then touches B, B and C each carry (q + q/2)/2 = 3q/4. Now C (3q/4) lies at the midpoint, a distance r/2 from each of A (q/2)
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account