A co-axial cable used in transmission line has inner radius of `0.1 mm` and outer radius of `0.6 mm`. Calculate capacitnace per

Correct Answer - `71.5 pF//m`
`(C )/(l) = (2pi in_(0))/(log e((r_(b))/(r_(a)))) = 2xx(22)/(7) xx (8.85xx10^(-12))/(log_(e) ((0.6xx10^(-3))/(0.1xx10^(-3))))`
`= 71.5 pF//m`

A co-axial cable used in transmission line has inner radius of `0.1 mm` and outer radius of `0.6 mm`. Calculate capacitnace per meter of the cable.

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