Electrostatics Question 677
Question: The force between two small charged spheres having charges of $ 1\times {{10}^{-7}}C $ and $ 2\times {{10}^{-7}}C $
Options:
A) $ 4.5\times {{10}^{-}}^{2}N $
B) $ 4.5\times {{10}^{-}}^{3}N $
C) $ 5.4\times {{10}^{-2}}N $
D) $ 5.4\times {{10}^{-3}}N $
Show Answer
Answer:
Correct Answer: B
Solution:
[b] Here, $ q _{1}=1\times {{10}^{-7}}C,q _{2} $
and $ 2\times {{10}^{-7}}C, $
$ r=20cm=20\times {{10}^{-2}}m $
