The temperature coefficient of resistivity of platinum is $3.9 \times 10 ^ { - 3 } / \mathrm { C } ^ { \circ }$. If a platinum wire has a resistance of $R$ at a temperature of $23 ^ { \circ } \mathrm { C }$, to what temperature must it be heated in order to double its resistance to $2 R$ ?
A) $730 ^ { \circ } \mathrm { C }$
B) $300 ^ { \circ } \mathrm { C }$
C) $930 ^ { \circ } \mathrm { C }$
D) $280 ^ { \circ } \mathrm { C }$

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The Answer of The temperature coefficient of resistivity of platinum is $3.9 \times 10 ^ { - 3 } / \mathrm { C } ^ { \circ }$. If a platinum wire has a resistance of $R$ at a temperature of $23 ^ { \circ } \mathrm { C }$, to what temperature must it be heated in order to double its resistance to $2 R$ ?
A) $730 ^ { \circ } \mathrm { C }$
B) $300 ^ { \circ } \mathrm { C }$
C) $930 ^ { \circ } \mathrm { C }$
D) $280 ^ { \circ } \mathrm { C }$

The Temperature Coefficient of Resistivity of Platinum Is 3.9×10−3/C∘3.9 \times 10 ^ { - 3 } / \mathrm { C } ^ { \circ }3.9×10−3/C∘

The Temperature Coefficient of Resistivity of Platinum Is $3.9 \times 10 ^ { - 3 } / \mathrm { C } ^ { \circ }$