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Coulomb's Law

  • Thread starter weemanbran
  • Start date
  • #1

Homework Statement


The magnitude of electrical force between a pair of charged particles is _____ as much when the particles are moved half as far apart.


Homework Equations





The Attempt at a Solution



I understand that Coulomb's Law is.

F = k q1 q2 / d^2

So is the answer just putting in the distance which is 1/2 and squaring it? So is it just 1/2^2?
 

Answers and Replies

  • #2
dynamicsolo
Homework Helper
1,648
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Be careful -- the distance between particles appears in the denominator of Coulomb's Law. So if the distance is halved, what happens to this ratio?
 
  • #3
If the distance distance is halved then the ratio would increase... I just don't know by how much...
 
  • #4
238
0
Will the force increase or decrease? and by what factor? Hint: What is [tex](\frac{1}{2})^2[/tex]?
 
  • #5
dynamicsolo
Homework Helper
1,648
4
Will the force increase or decrease? and by what factor? Hint: What is [tex](\frac{1}{2})^2[/tex]?
I think you mean [tex]\frac{1}{(\frac{1}{2})^2}[/tex] ; the halved distance is in the denominator for Coulomb's Law...
 

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