The capacitance per unit length of a coaxial cable, made of two concentric cylinders, is 50 pF/m. What is the radius of the outer cylinder if the radius of the inner one is 1.0 mm?

A)

3.0 mm
B)

2.0 mm
C)

4.0 mm
D)

0.50 mm
E)

1.0 mm


A

Physics & Space Science

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