Final answer:
The question is about finding the temperature at which gold's resistivity is double that of tungsten's resistivity at room temperature. This involves understanding that resistivity increases with temperature and can be calculated using the characteristic temperature coefficient of resistivity for each material.
Step-by-step explanation:
The subject of this question is Physics, specifically focusing on the topic of resistance and resistivity in relation to temperature changes. The question involves understanding how the resistivity of gold changes with temperature compared to the resistivity of tungsten at room temperature, which is given as 20°C.
Resistivity (ρ) is a fundamental electrical characteristic of a material that quantifies how strongly it resists current flow. The resistivity of a material generally increases with temperature, which can be described with the formula ρ = ρ0(1 + αΔT), where ρ0 is the resistivity at a reference temperature, α is the temperature coefficient of resistivity, and ΔT is the change in temperature.
To determine the temperature at which gold's resistivity is double that of tungsten's resistivity at room temperature, one would need to know the table of standard resistivities and temperature coefficients for both gold and tungsten. With that information, you would adjust the temperature of gold until you reach the point where its resistivity is twice that of tungsten's at room temperature.