- #1

theone

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## Homework Statement

The question is to draw a magnetic equivalent circuit for this

http://postimg.org/image/kek5fgr9z/

## Homework Equations

The reluctance is given by

##R=\frac{l}{μ_oμ_rA_c}##

## The Attempt at a Solution

I am confused about the dimensions of the circuit, and also about what dimensions to use for the cross section ##A_c##

For example, is the reluctance R1 given by

##R_1=\frac{\frac{60}{1000}}{μ_0 1500 (\frac{20}{1000} \frac{20}{1000})}##