A disk of radius 2.4 cm carries a uniform surface charge density of 3.1 μ C/m2. Using reasonable approximations, find the electric field on the axis at the following distances.(adsbygoogle = window.adsbygoogle || []).push({});

I have used the equation E=(Q/ε_{0})(1/(4*pi*r^{2}))

I also tried the equation E=(Q/2(ε_{0}))(1-(z/(√(z^{2})+(r^{2})))

Thanks in advance for the help. Both equations have not led me to the correct answer.

*note, there is not a figure provided for this question*

**Physics Forums - The Fusion of Science and Community**

# Electric field at a distance from a charged disk

Know someone interested in this topic? Share a link to this question via email,
Google+,
Twitter, or
Facebook

Have something to add?

- Similar discussions for: Electric field at a distance from a charged disk

Loading...

**Physics Forums - The Fusion of Science and Community**