A Tungsten Wire Is Used to Determine the Melting Point $\Omega$

question 63

Multiple Choice

A tungsten wire is used to determine the melting point of indium. The resistance of the tungsten wire is 6.000 $\Omega$ at 20°C and increases to 9.700 $\Omega$ as the indium starts to melt. $\alpha$ _tungsten = 4.50 * 10 ^{- 3} (°C) ^{- 1}. What is the melting temperature of indium?

• A) 351°C
• B) 731°C
• C) 132°C
• D) 157°C

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