Measuring the magnetic field of Helmholtz coil with the magnetic sensor of a 
smart phone

LIU Wei, CHENG Min-xi

doi:10.16854 /j.cnki.1000-0712.190402

College Physics >

2020 , Vol. 39 >Issue 05: 31 - 32

DOI: https://doi.org/10.16854 /j.cnki.1000-0712.190402

Measuring the magnetic field of Helmholtz coil with the magnetic sensor of a smart phone

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School of Physics and Telecommunication，South China Normal University，Guangzhou，Guangdong 510006，China

Received date: 2019-09-05

Revised date: 2019-10-13

Online published: 2020-05-17

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Abstract

The magnetic sensor in the smart phone is located by a pre-experiment. The magnetic field distribution throughout the axle wire of Helmholtz Coil is measured，Biot-Savart Law and magnetic field’s superposition principle are verified by a handy and precise new measurement method.

Key words： smart phone; magnetic sensor; Helmholtz Coil; superposition principle; Biot-Savart Law

Cite this article

LIU Wei, CHENG Min-xi . Measuring the magnetic field of Helmholtz coil with the magnetic sensor of a smart phone[J]. College Physics, 2020 , 39(05) : 31 -32 . DOI: 10.16854 /j.cnki.1000-0712.190402

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