- #1

MahalMuh

- 8

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- Homework Statement
- We have a very long and non-conducting cylinder with radius r=0.021 m and even charge distribution with volume density ρ=0.18 μC/m3.

a) What is the electric field outside the cylinder with x=0.042 m from the axis of cylinder?

b) What is the electric field inside the cylinder with y=0.0087 m from the axis of cylinder?

- Relevant Equations
- Q=λl = ρAl = lρπr^2 (charge caused) (1)

E = λ / (2πεx^2) (electric field of cylinder) (2)

ε = 8.8542*10^-12 C^2/(Nm^2)

a) I have calculated (1) λ = ρA = ρπr^2 = 2.49 * 10^-10 C/m and placed it into (2) yielding E = λ / (2πεx^2) = 106.73 N/C.

This doesn't seem to be correct by the feedback, however.

b) Here just to consider the proportion of the cylinder mass constrained by y.

This doesn't seem to be correct by the feedback, however.

b) Here just to consider the proportion of the cylinder mass constrained by y.