[sdiy] ot: analytical solutions for simple inductance cases

[Chris Williams]

For a circular loop (and the radius of the loop is much larger than the
width of the wire)

L = u0*l*(ln(4*l/w)-2.45)/(2*pi)
where l = 2*pi*r

r is the radius of the loop
w is the width of the wire
u0 is 4*pi*10^(-7)

HTH Martin.

Cheers,

Chris.

PS: I have an electromagnetic theory exam on Saturday and its doing my
sanity no good at all ;)


On Thu, 2003-11-06 at 17:45, Czech Martin wrote:
> Can anyone point me to analytical solutions for 
> inductance of a wire loop, e.g. with Biot-Savart.
> Or to approximations, e.g. if the wire is much thinner
> then the diameter of the loop.
> 
> i need it for some sanity check.
> 
> Thanx.
> 
> 
> Martin Czech
> 
> 
>  
> 
>