A scientist observes that the electrical resistance of a superconducting material drops to zero when the material is cooled to very low temperatures. Which of the following statements best describes what the scientist is observing?
Answer
A
The scientist is observing the electrical power of a superconductor.
B
The scientist is observing the temperature of a superconductor.
C
The scientist is observing an intensive property of a superconductor.
D
The scientist is observing an extensive property of a superconductor.