Resistors and Ohm's Law Video Lessons

Video Thumbnail

Concept

Problem: A circuit calls for a 0.900mm -diameter copper wire to be stretched between two points. You don't have any copper wire, but you do have aluminum wire in a wide variety of diameters. What diameter (in mm) aluminum wire will provide the same resistance?

FREE Expert Solution

Resistance:

R=ρlA where ρ is the resistivity, l is the length, and A is the cross-sectional area.

The copper wire and aluminium wire have the same length and must have the same resistance.

83% (252 ratings)
View Complete Written Solution
Problem Details

A circuit calls for a 0.900mm -diameter copper wire to be stretched between two points. You don't have any copper wire, but you do have aluminum wire in a wide variety of diameters. What diameter (in mm) aluminum wire will provide the same resistance?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Resistors and Ohm's Law concept. You can view video lessons to learn Resistors and Ohm's Law. Or if you need more Resistors and Ohm's Law practice, you can also practice Resistors and Ohm's Law practice problems.