In physics lessons at secondary school and experimental physics courses at universities, the magnetic field inside a current-carrying solenoid is considered quantitatively. The corresponding equations and theories are supported by measuring the magnetic flux density inside the solenoid with a Hall probe. It has already been shown that smartphones with their internal magnetometer are suitable for quantitative investigations of magnetic fields. E.g., Silva proposed to wind a small coil on a pen and investigate the dependence of the stray field on the number of windings. Ogawara et al. placed a smartphone inside a current loop and studied the dependence of the flux density on current I.
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IPHYSICSLABS| January 01 2022
Investigation of the flux density of a solenoid using the magnetometer of smartphones
Phys. Teach. 60, 70–71 (2022)
A. Kaps, F. Stallmach; Investigation of the flux density of a solenoid using the magnetometer of smartphones. Phys. Teach. 1 January 2022; 60 (1): 70–71. https://doi.org/10.1119/10.0009116
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