A 570-m length of coaxial cable has an inner conductor that, Ask an Expert

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A 57.0-m length of coaxial cable has an inner conductor that has a diameter of 2.58 mm and carries a charge of 8.10 µC. The surrounding conductor has an inner diameter of 7.27 mm and a charge of ?8.10 µC. Assume the region between the conductors is air.

(a) What is the capacitance of this cable?

C=___nF

(b) What is the potential difference between the two conductors?

V =___kV

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