Abstract:The balances of particles and charges in the volume of parallel-plane ionization chamber are considered. Differential equations describing the distribution of current densities in the chamber volume are obtained. As a result of the differential equations solution an analytical form of the current-voltage characteristic of parallel-plane ionization chamber with inhomogeneous ionization in the volume is got. PACS: 29.40.Cs, 52.20.-j.

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.. PACS: 01.50 My, 07.55 Db, 84.32 Hh.

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