Suppose at 70°C the resistance of a platinum resistance thermometer is 170 Ω. When placed in a particular solution, the resistance is 7+100 Ω. What is the temperature of this solution? Temperature Coefficient of resistivity for platinum is 3.93 x 10-3 1/ 0 C.

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.