Question Detail
Question
From Coulomb's law, what will be the slope of the graph of log F vs log r?
Correct Answer
Option D is the correct answer.
Detailed Explanation
F = kq1q2/r2. Taking logs: log F = log(kq1q2) - 2 log r. This is a straight line log F vs log r with gradient -2.
Hint
F = kq1q2/r2.