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Resistance of thread (109 Ω) | 9 | 19 | 41 | 63 | 102 | 76 | 50 | 24 |
Length of thread (mm) | 5 | 7 | 9 | 11 | 13 | 9 | 7 | 5 |
84. What is the best explanation for the behavior exhibited in the data?
- A. Longer threads can carry more current than shorter threads and so make better electrical conductors.
- B. The thread stops being a conductor when it is stretched to 13 mm due to breaks that occur in the thin coating.
- C. As the thread is stretched, the coating thins and its resistance increases; as the thread is relaxed, the coating returns nearly to its original state.
- D. The resistance of the thread increases with distance from the end of the thread.
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