The resistivity of Aluminium is twice that of copper. However, the density of Aluminium is one-third that of Copper.(adsbygoogle = window.adsbygoogle || []).push({});

a) For equal length and resistance, calculate the ratio:

mass of aluminium/mass of copper

I'm thinking, the density ratio (Al:Cu) is 1:3 .....and the resistivity ratio is 2:1 ...so would the overall ratio be, 2:3 ? I have no idea...

This is easy Physics compared to what else is on this site, but my physics isn't any good, so I joined this forum in hope that someone would be able to help me!

Thank you :)

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Help! Easy Physics - Resistivity Ratios

**Physics Forums | Science Articles, Homework Help, Discussion**