The insulation of the cable decreases with__________?
Correct answer: A. the increase in length of the insulation
- A. the increase in length of the insulation
- B. the decrease in the length of the insulation
- C. either A. or (b)
- D. none of the above
Explanation
Insulation resistance is proportional to cable length, as given by R = ρl/A. Thus, increasing the length increases resistance rather than decreasing it, so the question is using 'insulation' to mean insulation resistance.
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