The Space Between the Inner Wire of Radius a = $\kappa$

question 29

Multiple Choice

The space between the inner wire of radius a = 1 mm of a co-axial cable and the conducting shield of radius b = 8 mm is made of nylon ( $\kappa$ = 4.2) .The capacitance per meter is

• A)13.4 pF
• B)26.8 pF
• C)35.8 pF
• D)56.2 pF
• E)112 pF

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