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roccofitz
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Homework Statement
A coaxial cable has an inner core diameter 6mm and inner diameter of the outer sheath is 20mm. There are two layers of insulation between the conductors, the inner layer from a radius of 3mm to 9mm has relative permittivity of 8 while the outer layer from radius 9mm to 10mm has a relative permittivity of 1.5. The voltage between the conductors is 1.5kV
a. Plot the electric field strength in the insulation as a function of radius
b. Determine the max field strength in both insulators.
Homework Equations
Permittivity equation: epsilon= epsilon_0*epsilon_r
Electric field strength: E= q/4*pi*epsilon*r^2
The Attempt at a Solution
Not sure how to approach this question.