Ask Question
15 November, 02:33

A long straight wire has fixed negative charge with a linear charge density of magnitude 4.6 nC/m. The wire is to be enclosed by a coaxial, thin-walled, nonconducting cylindrical shell of radius 2.2 cm. The shell is to have positive charge on its outside surface with a surface charge density σ that makes the net external electric field is zero. Calculate σ.

+2
Answers (1)
  1. 15 November, 03:19
    0
    Answer: - 33.3 * 10^9 C/m^2 (nC/m^2)

    Explanation: In order to solve this problem we have to use the gaussian law, the we have:

    Eoutside = 0 so teh Q inside==

    the Q inside = 4.6 nC/m*L + σ * 2*π*b*L where L is the large of the Gaussian surface and b the radius of the shell.

    Then we simplify and get

    σ = - 4.6 / (2*π*b) = - 33.3 nC/m^2
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A long straight wire has fixed negative charge with a linear charge density of magnitude 4.6 nC/m. The wire is to be enclosed by a coaxial, ...” in 📙 Physics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers