Which object has more electrical resistance. A copper conducting wire or a filament in a lighbulb?
The electrical resistance is defined as the ratio of the voltage to the current in a circuit. The other formula for resistance,R is ρl/A where ρ is the resistivity, l is the length and A is the cross-sectional area perpendicular to the flow of current. It would be necessary to determine the resistivity of the material used to make the filament which is normally tungsten, and that of copper. Anyhow, the resistivity of tungsten is much higher than that of copper because 1 mole of tungsten contains many more elementary particles than 1 mole of copper so the filament would have a larger resistance if their thicknesses were approximately equal (the difference in their lengths would not make much of a difference). Suppose the filament and the wire were to be made of the same material and were of equal thickness, the conducting wire would have a larger resistance since it is longer and R would be proportional to l in this scenario, although this scenario is virtually never encountered. In gen
