How many times is the resistance of a wire made of nichrome greater than that of a wire made

How many times is the resistance of a wire made of nichrome greater than that of a wire made of constantan if the lengths and cross-sectional areas of the wires are the same? (Resistivity of nichrome p1 = 1.1 ohm * mm2, resistivity constantan p2 = 0.50 ohm * mm2)

To calculate the ratio of the resistances of the wires under consideration, we use the ratios: k = Rн / Rк = (ρн * l / S) / (ρк * l / S) = ρн / ρк.

Constants: ρн – beats. electrical resistance of nichrome (according to the condition ρн = 1.1 Ohm * mm2 / m); ρк – beats. electrical resistance constantan (according to the condition ρк = 0.5 Ohm * mm2 / m).

Let’s make a calculation: k = ρн / ρк = 1.1 / 0.5 = 2.2 p.

Answer: The resistance of nichrome wire is 2.2 times higher.