Coulomb's Law (Electric Force) Video Lessons

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Problem: 1. When two point charges are a distance d apart, the electric force that each one feels from the other has a magnitude F. In order to make this force three times as strong, the distance between the charges would have to be changed to (A) 3d (B) sqrt(3d) (C) d/(sqrt3) (D) d/3 (E) d/9 (F) 9d 

FREE Expert Solution

From Coulomb's law, the force between two charges q1 and q2 separated by distance d is given by:

 F=kq1q2d2

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Problem Details

1. When two point charges are a distance d apart, the electric force that each one feels from the other has a magnitude F. In order to make this force three times as strong, the distance between the charges would have to be changed to 

(A) 3d 

(B) sqrt(3d) 

(C) d/(sqrt3) 

(D) d/3 

(E) d/9 

(F) 9d 

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