Electric Field from 2.5uC Point Charge at 0.75m

[domyy]

Homework Statement

Find the electric field produced by a 2.5uC point charge at distance of 0.75m.

E = ___ V/m

Homework Equations

E = kq/r^2

The Attempt at a Solution

E = (9x10^9 Nm^2/C^2)(25)/(0.75)^2 = 400 x 10^9

My concern is about the units I am being asked. Since K is using Nm^2/C^2, how do I convert it to V/m IF IT´S CORRECT, of course.

Thanks in advance!

 

[david13579]

N/C is equivalent to V/m. There is no need to worry about conversions. The units of K cancel with the ones for q and r^2 to give you N/C

 

[domyy]

Hi, thanks for the reply. Does my answer seem correct to you? Am I on the right track?

 

[domyy]

Anyone? Please, time is really short for me and I really need quick help here. Please.

 

[domyy]

I just need a confirmation. I posted the calculus and values. Are they correct?