What is the capacitance per metre length of the cable in pico-farad ?

Posted on 2013-12-20 15:55:00 in Physics by JNHSMOM

A co-axial cable consists of a copper core 1 mm radius within an outer metal sheath of 1 cm. radius separated by an insulating material of dielectric constant 5. What is the capacitance per metre length of the cable in pico-farad ?

How much enery is stored in 10 km length of this cable when 10,000 volts is applied between the core and the sheath ?

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