The resistance at critical temperature is
Correct answer: D. Zero
- A. Micro ohm
- B. Pico ohm
- C. Mega ohm
- D. Zero
Explanation
Superconductors are materials that, below a specific critical temperature, exhibit zero electrical resistance. This means that they can conduct electricity without any energy loss. When a material becomes superconducting, its resistance drops abruptly to zero. Therefore, the correct answer is zero resistance at the critical temperature. The other options (micro ohm, pico ohm, mega ohm) all represent some level of non-zero resistance, which does not occur in a superconducting state.
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