Question:

Two charged particles, placed at a distance d apart in vacuum, exert a force F on each other. Now, each of the charges is doubled. To keep the force unchanged, the distance between the charges should be changed to_____
Fill in the blank with the correct answer from the options given below.

Updated On: Nov 26, 2024
  • 4d
  • 2d
  • d
  • \(\frac{d}{2}\)
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The Correct Option is B

Solution and Explanation

According to Coulomb’s law, \(F = \frac{k q_1 q_2}{d^2}\)​​. When charges are doubled, the distance must increase by a factor of 2 to keep the force constant.
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