Question
Physics Question on Current electricity
The resistance of platinum wire at 0°C is 2Ω and 6.89Ω at 80°C. The temperature coefficient of resistance of the wire is:
A
3 \times 10^{-3} \degree C^{-1}
B
3 \times 10^{-2} \degree C^{-1}
C
3 \times 10^{-1} \degree C^{-1}
D
3 \times 10^{-4} \degree C^{-1}
Answer
3 \times 10^{-2} \degree C^{-1}
Explanation
Solution
The correct option is (B): 3 \times 10^{-2} \degree C^{-1}