Figure (a) shows a narrow charged solid cylinder that is coaxial with a larger charged cylindrical shell. Both are nonconducting and thin and have uniform surface charge densities on their outer surfaces. Figure (b) gives the radial component E of the electric field versus radial distance r from the common axis. The vertical axis scale is set by Es = 4.5 x 103 N/C. What is the linear charge density of the shell?
A cylinder of radius just under r cm encloses only the solid cylinder and has an electric field of Es/3 at its surface.
Apply Gauss’s law:
2π(rcm)L(Es/3) = λL/e, where L is the length of the Gaussian cylindrical surface.
The L’s on both sides cancel, and one can solve for the charge per unit length, λ.
We get:
2π(rcm)(Es/3) = λ/e
=> λ = 2π(rcm)(Es/3)e
= 2π*r*(4.5 × 10^3/3)*(8.85*10^-12)
= 8.34*10^-8 r
[Plug in r to get the numerical value]
Figure (a) shows a narrow charged solid cylinder that is coaxial with a larger charged cylindrical shell.
Figure (a) shows a narrow charged solid cylinder that is coaxial with a larger charged cylindrical shell. Both are nonconducting and thin and have uniform surface charge densities on their outer surfaces. Figure (b) gives the radial component E of the electric field versus radial distance r from the common axis. The vertical axis scale is set by Es = 3.6 × 103 N/C. What is the linear charge density of the shell? E 0 14.4 -ES r(cm)
Figure (a) shows a narrow charged solid cylinder that is coaxial with a larger charged cylindrical shell. Both are nonconducting and thin and have uniform surface charge densities on their outer surfaces. Figure (b) gives the radial component E of the electric field versus radial distancer from the common axis. The vertical axis scale is set byEs = 4.8 × 103 N/C. What is the linear charge density of the shell?
Figure (a) shows a narrow charged solid cylinder that is coaxial with a larger charged cylindrical shell. Both are nonconducting and thin and have uniform surface charge densities on their outer surfaces. Figure (b) gives the radial component E of the electric field versus radial distance r from the common axis. The vertical axis scale is set by Es = -4.8x 103 N/C. What is the linear charge density of the shell?
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A positively charged particle is held at the center of a spherical shell. The figure gives the magnitude E of the electric field versus radial distance r. The scale of the vertical axis is set by Es = 14.5 × 107 N/C. Approximately, what is the net charge on the shell?
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