(adsbygoogle = window.adsbygoogle || []).push({}); Pretty easy Circuit question...

So, im in my first year ENGE Class second week in, and im given this diagram

1. The problem statement, all variables and given/known data

Basically Im given this Diagram (attachment)

And told to find the total Resistivity if using AWG 18

So, i got

P=800W

E=100V

R=E^2/P = 15.125 Ohms

2. Relevant equations

So for the Resistivity R = p l/a.

3. The attempt at a solution

But im completly unsure how to get p l & a.

This isn't even a assignment question it was a example done in class on the board, but my instructor just randomly says everything and doesnt explain anything.

So when alls said and done I have

R = 4.13

I = 110/23.5= 4.7 Amps

But absolutly no clue as to how to get it :(

**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: Pretty easy ENGE question

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