In a concentric cable capacitor the diameters of ___

In a concentric cable capacitor the diameters of the inner and outer cylinders are 3 and 10 mm respectively.

It εr for insulation is 3, find its capacitance per metre.

A. 100 pF
B. 110 pF
C. 118.8 pF
D. 138.8 pF

Show Answer

Answer: D

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