We begin with having a coil, a compass, and voltage source to explore the magnetic field produced by coils and its variance due to different currents. We derived an equation for the biot-savart law and used that to find an a equivalent for coils B(coil)=ulN/2R=B(earth)tan(theta)
We checked the currents with our ammeter in series in our circuit, again we used a potential source to observe the deflection of the compass needle for increasing currents.
We found the value of the magnetic field of the earth to 2.83*10^-5 T which accounted for by lining our compass up initially in the magnetic field so we could get good results from the magnetic field in the center of the coil that caused the needle deflection in our excel results and graph.
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