Magnetic Flux Test Magnetic Flux Test Magnetic Flux Test Magnetic Flux Test

Magnetic Flux Strength Experiment

The formula for the magnetic field strengh of a solenoid is

    B = u0 I
        -----
        2 R


Where  B = Field Strength
  u0 = Magnetic Permeability of Vacuum
    I = Current (Amps)
   R = Radius of loop

Is this really TRUE?

The rationale for questioning this "law" is, if true, then why don't we have electric motors with Aluminium WIRE? Since Aluminium is cheaper, and Aluminium is only half the weight, the economics should favor Aluminium.

Test Set-up

Premise: To Test The Dependence of the Conductor Material
on the Strength of the Induced Magnetic Field

Test Equipment

      Power supply - 1 to 3 Amp    /     test sample    /      Magnetic Flux meter

Results of Second Test

Test result for Tuesday, 17 August 2010, 3pm .
Sample
medal
wire size
gauge
@ .5 Amps @ 1 Amps @ 2.0 Amps
Aluminium 18 .3 gauss .6 gauss 1.3 gauss
Aluminium 8 .1 gauss .5 gauss 1.6 gauss
Copper 18 .3 gauss .7 gauss 3.2 gauss
Copper
Stranded
18 .5 gauss 1.6 gauss 3.2 gauss
Copper 14 .2 gauss 1.4 gauss 2.7 gauss
Copper 6 .35 gauss .45 gauss 2.85 gauss
Iron 14 .3 gauss .7 gauss 2.9 gauss
Tin 00 .2 gauss .4 gauss .6 gauss
Mercury 6 .35 gauss .65 gauss 1.4 gauss

The truth is in the details

Aluminium appears to produce less magnetic strength than Copper when using the same amout of power (Amps). So, performance trumps economics AND the "law".


Thank you for dropping by.
Live Long and Prosper!

Norm Silliman

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