The filament of a tungsten light bulb has a resistance of 1 Ω at 20°C. If the length of the tungsten is 33.5 cm, what should be its diameter, in mm?

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Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.