L = 2*pi*r,
A = L/4*pi,
A = L^2/16
Okay i know the lengths are the same for the circular coil and the square coil. Oh and the form has changed.
So A1/A2 = (L^2/4*pi) / (L^2/16) = 16/4*pi
and for the current i could use I2 = V2/R
and i'm not sure but i think R = V1/I1 ?
I've put some formulas together with some help, can someone work the rest of this out, i have just about all the formulas i believe.