A conductor has a resistivity of 2.63 × 10-8 Ω m at 20° C. If the temperature of conductor is raised to 200°C, its resistivity will :
A. increase
B. decrease
C. remain unaffected
D. none of these
Answer:A
A conductor has a resistivity of 2.63 × 10-8 Ω m at 20° C. If the temperature of conductor is raised to 200°C, its resistivity will :
A. increase B. decrease C. remain unaffected D. none of these