Length of the cable is doubled, its capacitance C will be

(A) one-fourth.
(B) one-half.
(C) doubled.
(D) unchanged.

Ans: (C) doubled.

Explanation:
The length of the cable and the capacitance of the cable are directly proportional to each other. Hence, if the length gets doubled, then the capacitance also can be doubled.

In a cable, the capacitance is usually measured in picofarads per foot (pf/ft). This indicates just how much electrical energy the cable can store. Capacitance can be viewed as an intimate ongoing relationship between the conductor and the ground plane.

What is the Capacitance of cable?





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