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As the temperature of a metal rod varies, so does the resistance and the dimensions of the rod. if a iron rod has a resistance of 2.89 ω at 20.0°c, determine the resistance of the rod (in ω) at 120°c by accounting for the changes in both the resistivity and the dimensions of the rod. the coefficient of linear expansion for iron is 4.50 ✕ 10−6 (°c)−1 and the temperature coefficient of resistivity is 4.50 ✕ 10−3 (°c)−1.
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As the temperature of a metal rod varies, so does the resistance and the dimensions of the rod. if a...
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