Homework Answers
The potential difference between the inner and outer layers of coaxial cable is
V = Emax r ln ( R / r)
where
r - radius of inner conductor
R = inside radius of outer conductor
so,
V = 18e6 * 0.8e-3 * ln ( 3e-3 / 0.8e-3)
V = 19033 V
or
V = 19 kV
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