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WestTXcollegekid
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Homework Statement
A long coaxial cable consists of an inner cylindrical conductor with radius a and an outer coaxial cylinder with inner radius band outer radius c. The outer cylinder is mounted on insulating supports and has no net charge. The inner cylinder has a uniform positive charge per unit length λ.
Calculate the magnitude of the electric field at any point between the cylinders a distance r from the axis.
Express your answer in terms of the variables a, b, c, r, λ and constants π and ϵ0.
Homework Equations
E=(1/4πϵ0)(q/r^2)
q= λ2πr
The Attempt at a Solution
Using the equation above I got (E= λ/2ϵ0r). I just want to make sure that I'm not missing anything. I only have one attempt left at answering the question.