Electrostatics Question 173
Question: $ +2C $ and $ +6C $ two charges are repelling each other with a force of $ 12N $ . If each charge is given $ -2C $ of charge, then the value of the force will be [CPMT 1979; Kerala PMT 2002]
Options:
A) $ 4N $ (Attractive)
B) $ 4N $ (Repulsive)
C) $ 8N $ (Repulsive)
D) Zero
Show Answer
Answer:
Correct Answer: D
Solution:
Resultant charges after adding the -2C be $ (-2+2)=0 $ and $ (-2+6)=+4C $
therefore F$ =\frac{kQ _{1}Q _{2}}{r^{2}}=k\times \frac{0\times 4}{r^{2}}=0 $
