A Certain Material Has a Resistivity of 7 $\Omega$ M at Room Temperature, and Its Resistivity Decreases as the .M

question 8

Multiple Choice

A certain material has a resistivity of 7.8 *10³ $\Omega$ .m at room temperature, and its resistivity decreases as the temperature is raised by 100°C.The material is most likely:

• A)a metal
• B)a pure semiconductor
• C)a heavily doped semiconductor
• D)an insulator
• E)none of the above

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