1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Gauss's Law, electric field of sphere

  1. Feb 3, 2010 #1
    A nonconducting sphere of radius 10.00 cm carries a uniform volume charge density ρ = 410 nC/m3.

    (a) What is the total charge of the sphere?
    1.717 nC

    Find the electric field at the following radii.

    (b) r = 2.10 cm

    (c) r = 9.90 cm

    (d) r = 10.10 cm

    (e) r = 13.6 cm

    My attempt at the problem, after manipulating the equation EV=charge inside/[8.85x10^(-12)], was just to insert values into E=Qr/[(4*pi*R^3)*8.85x10^(-12)]; where Q is defined as the total charge, r the radius asked to calculate and R the initial radius.
  2. jcsd
  3. Feb 3, 2010 #2


    User Avatar
    Homework Helper

    Your attempt is correct.
  4. Feb 4, 2010 #3
    Thank you for responding.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook