Question

Coulomb measured the deflection of sphere A when spheres A and B had equal charges and were a distance, r, apart. He then made the charge on B one-third the charge on A. How far apart would the two spheres then have had to be for A to have had the same deflection that it had before?

Verified

Step 1

1 of 4

Coulomb's law states that the electric force $F$ between charges $q_A$ and $q_B$ at a distance $r$ from each other is given as:

$F = \dfrac{k q_A q_B}{r^2}$

where $k = 9 \cdot 10^9 ~\mathrm{\dfrac{N m^2}{C^2}}$ is Coulomb constant.

Create an account to view solutions

Physics: Principles and Problems

9th EditionElliott, Haase, Harper, Herzog, Margaret Zorn, Nelson, Schuler, Zitzewitz
3,068 solutions

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

4th EditionRandall D. Knight
3,509 solutions

Mathematical Methods in the Physical Sciences

3rd EditionMary L. Boas
3,355 solutions

Fundamentals of Physics

10th EditionDavid Halliday, Jearl Walker, Robert Resnick
8,943 solutions