Question

What is the magnitude of a point charge that would create an electric field of 1.00 N/C at points 1.00m away?

Answer 1

`|q| = Er^2/ k = (1 N/C*1 m^2)/(8.99×109 N·m^2/C^2) =1 .11×10^(−10) C`

Explanation:

The magnitude of the E field due to a point charge q at a distance r is given by `E = k|q|/ r^2`, Here we are given `E " and " r`, so we can solve for the required charge, `q`:
`|q| = Er^2/ k = (1 N/C*1 m^2)/(8.99×109 N·m^2/C^2) =1 .11×10^(−10) C`