An appliance contains a copper wire. When the appliance is not in use, the wire has a resistance of about Ro =5900 2. But when the appliance is in operation, the wire has an increased resistance R due to heating. If the temperature increases about 15°C, then find the operating-resistance of the wire. (The temperature coefficient of copper is a = 0.0039/°C.) 5. 7295 0 6245 2 7517 0 6699 0 6479 0 7020 2 А. D. В. E. С. F.

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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.