A modification of Oersted experiment

Details A modification of Oersted experiment A modification of Oersted experiment

2008-07-24

arxiv.org/abs/0807.3851v2

Eur. J. Phys. 30 (2009) 641-650.

Physics

General Physics

11 pages, 7 figures

Scientific paper

10.1088/0143-0807/30/3/021

The paper describes a simple setup of Oersted experiment. A planar coil of wires has been used to deflect vigorously the magnetic needle (more than 80 angular degrees) when a current of up to 1 A flows along it. Based on theoretical analysis the torque on the magnetic field is analytically expressed taking into account the inhomogeneity of the field and the needle shape. What is more, a procedure to measure the Earth's magnetic component is implied and implemented and its magnitude has been estimated following the same steps.

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