Question

Two identical metallic spheres A and b each carrying a charge of q C are fixed .They repel each other with a force of 2×10-⁵ N. Another identical unchanged sphere C is made to touch A, moved to touch B , and placed halfway between A and B. what is the electric charge and the electric force (in N) on each sphere in terms of q?

Answer 1

Answer:

Answer is 2

Explanation:

Two metallic sphere a and b carrying charge half half and force 2 ×10^-5

F1=k(1/2)(1/2)/r2

F1=k/4r2 equ.1

Metallic spheres a is half and c is one so

F2=k/2rsquare equ.2

equ1/equ2

2×10^-5/F2=k/4r^2×2r^2/k

F2=4×10^-5