- #1
dinhjeffrey
- 30
- 0
Homework Statement
http://img710.imageshack.us/i/2631001.jpg/
#29
Homework Equations
p=I^2R
P=IV
The Attempt at a Solution
well, the answer is D, but i don't see why the length matters? can anyone find out the equation for this problem?
i thought it was B) cable B because it has more resistivity