Numerical - Computation of capacitance for 1 km /single core cable

Q.  A single core cable has a conductor diameter of 1 cm and the internal sheath diameter of 1.8 cm. If impregnated paper of relative permittivity 4 is used as the insulation, calculate the capacitance for 1 km length of cable?
- Published on 18 Dec 15

a. 0.378 μ F
b. 0.257 μ F
c. 0.549 μ F
d. 0.78 μ F

ANSWER: 0.378 μ F

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