Calculation of magnetic field of a Helmholtz coil pair. I need your help, for th

Question

Calculation of magnetic field of a Helmholtz coil pair.

I need your help, for the report i need to calculate the magnetic field for the various distance points along the axis. I can't make a formula in excel, so i need your help.

The formula looks like this:

Where 0 = 1,26*10-6 T*m/A

R = 0,20m

N=154

I=2A

z= distance along the axis, measured from the midpoint of coil.

So, the problem is, that is there a lot of "z" points, and i need to calculate "B" for every one of them. Here's the "z" points:

along the axis: 0,02; 0,04; 0,06; 0,08; 0,1; 0,12; 0,17; 0,22; 0,27; 0,32; 0,37; 0,42; 0,47; 0,52; 0,57; 0,62

perpendicular to the axis: 0,02; 0,04; 0,06; 0,08; 0,1; 0,12; 0,14; 0,16; 0,18; 0,2; 0,22; 0,24; 0,26; 0,28; 0,33; 0,38; 0,43; 0,48; 0,53; 0,58

Explanation / Answer

U NI R^2/2=1.26*10-6 * 154 * 2 * 0.2^2/2=7.7616 *10^-6

WRITE Z VALUES IN A COLUMN AND WRITE THE FOLLOWINF FORMULA IN B1

=(7.7616*0.000001)/(0.04+A1*A1)^(3/2)

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