Question
How must the diameters of copper and aluminum wire be related if they're to have the same resistance per unit length?
Step 1
We know that the resistance (R) of a wire is given by the formula R = Ļ(L/A), where Ļ is the resistivity of the material, L is the length of the wire, and A is the cross-sectional area of the wire. Show more…
Show all steps
Your feedback will help us improve your experience
Mrinal Rana and 53 other educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
If aluminum and copper wires of the same length have the same resistance, which has the larger diameter? Why?
Find the ratio of the diameter of aluminum to copper wire, if they have the same resistance per unit length (as they might in household wiring).
A copper wire and an aluminum wire of the same length have the same resistance. What is the ratio of the diameter of the copper wire to that of the aluminum wire?
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD