- #1
Richie Smash
- 293
- 15
Homework Statement
The following data concerning a constantan resistance wire is taken from a catalogue: ''Diameter/m = 5.6 x 10^-4, Resistance per meter = 1.947 ohms, Resistance per Kg = 913 ohms''.
Use the data to determine the density of the constantan wire in kg m^-3.
Homework Equations
V= IR
d=m/v
Volume of a cylinder: pi x Rsquared x height
The Attempt at a Solution
Well to be completely honest, I've never seen a question like this and I'm clueless, I really am.
But I still tried, I tried doing 1/0.00056 using the density formula, but my answer seemed way off.
Then I tried finding the radius from the diameter given and substituting it into the volume of a cylinder formula and then once finding the volume, substituting that into the density formula and assuming the mass to be 1 Kg.
But I'm pretty sure it's wrong, I'm getting some pretty wild numbers and I want to solve this :(