Question
Question: Two electrons separated by distance r experience a force F between them. The force between a proton ...
Two electrons separated by distance r experience a force F between them. The force between a proton and a singly ionised helium atom separated by distance 2r is –
A
4F
B
2F
C
F/2
D
F/4
Answer
F/4
Explanation
Solution
F = 
F ¢ = 