- #1

YoshiMoshi

- 228

- 8

## Homework Statement

Please see the picture attached.

## Homework Equations

## The Attempt at a Solution

I was able to solve part A correctly, at least I believe I was able to do so. I'm struggling with part (b) however. I'm not sure were to start on this. My test that has this problem doesn't have anything on MLT. I pulled out my Power Electronics book from my undergraduate and found that

R = (rho * l_b)/A_w

R -> Resistance of the winding

rho -> resistivity of the conductor material

l_b is the length of the wire

A_w is the wire bare area

I believe I need to find l_b? I don't understand exactly how I can go about this. I believe that for A_w

A_w = (5 cm)(3 cm) = 15 cm^2

I used 3 cm because it's a 3 cm stack as specified in the problem

Am I just supposed to assume for rho that I'm using copper winding?

I don't understand the hint and how I'm supposed to solve the problem using Ohm's law. The wire has a resistance R, and I found the MMF in part A, but not the voltage. Hence I'm stuck because

V = IR

I don't know V or I. and I know that

F = IN

Where I solved for F in part (a) but don't know I or N

Any help would be greatly appreciated.