Appeared in: 2025 (2 sets)
The temperature coefficient of resistance of nichrome is $1\cdot70 \times 10^{-4} \text{ }^\circ\text{C}^{-1}$. In order to increase resistance of a nichrome wire by $8\cdot5%$, the temperature of the wire should be increased by :
(A) $250^\circ\text{C}$
(B) $500^\circ\text{C}$
(C) $850^\circ\text{C}$
(D) $1000^\circ\text{C}$