Two charges $+q$ and $-q$ placed 2 m apart attract with 9 N. Find $q^2/10^{-9}$ in C² (take $k=9\times 10^9$).
Answer (integer)
4
Solution
$9 = 9\times 10^9 \cdot q^2/4 \Rightarrow q^2 = 4\times 10^{-9}$; answer $= 4$.
About this question
Subject: Physics · Chapter: Electrostatics · Topic: Coulomb's Law
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