The diagram below depicts a cross section of coaxial conductor with an inner wire of diameter and an outer conducting sheath of inside diameter , and some material placed in the space between the two wires. Suppose that you have a coaxial wire with di= 2.85 mm, do= 6.25 mm and mylar ( k= 3.10) is placed in the space between the two wires. If there is a potential of 1 kV between the wires, how much energy is stored in a 10 m piece of cable?
[tex] U=\int V dQ[/tex]
The Attempt at a Solution
I perform the intergral and come up with a couple equations this one seem the best:
[tex] U= .5QV[/tex] Right?
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