[PHYS] Example Question: A 56.0-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.

Example Question

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# Question

A 56.0-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.

(a) What is the capacitance of this cable?

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

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# Explanation

(a) What is the capacitance of this cable?

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

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# Answer

a) 3 * 10^(-9)

b) 2.69

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