1. (a) To what temperature must you raise a copper wire, originally at 21 °C, to double its resistance, neglecting any changes in dimensions? Use a = 3.9×10-³ °C T= (b) Does this happen in household wiring under ordinary circumstances?

Q: A copper wire has a resistance of 0.565 N at 20.0°C, and an iron wire has a resistance of 0.597 N at…

A: Given Data: The resistance of the copper wire is R = 0.565 Ω. The resistance of the iron wire is,…

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.