- #1
Drizzy
- 210
- 1
Homework Statement
My task is to plan and carry out experiments which show that the resistance of a conductor is proportional to the conductor's length. I have access to the following equipment: http://imgur.com/a/GuqUX
Amperemeter, voltmeter, electricity, ruler som other werid things and chromiumnickel
Homework Equations
I am guessing that I need these equations:
U = RI.
R = ρ
The Attempt at a Solution
Where should I start? First off, do I have the right equations? And secondly, how long should the wires be? 30 cm, 60 cm and 90 cm? Is that good?