The minimum value of potential gradient in a cable occurs in____________?
Correct answer: A. insulation
- A. insulation
- B. conductor
- C. outer sheath
- D. uniformly all over
Explanation
In a cable, the electric stress is greatest at the conductor surface and decreases outward, reaching its minimum at the inner surface of the sheath. This point lies within the insulating material, so insulation is the intended answer.
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