ISSN: 2375-3846
American Journal of Science and Technology  
Manuscript Information
 
 
Risk Assessments of Magnetic Field Radiation from AC and Battery Powered Laptop Computers
American Journal of Science and Technology
Vol.6 , No. 2, Publication Date: Nov. 21, 2019, Page: 14-19
116 Views Since November 21, 2019, 16 Downloads Since Nov. 21, 2019
 
 
Authors
 
[1]    

Abiola Olawale Ilori, Department of Physical Sciences, Ondo State University of Science and Technology, Okitipupa, Nigeria; School of Chemistry and Physics, University of Kwa Zulu-Natal, Pietermaritzburg Campus, South Africa.

[2]    

Omoniyi Ajoke Gbadamosi, Department of Mathematical Sciences, Ondo State University of Science and Technology, Okitipupa, Nigeria.

[3]    

Gilbert Akin Ibitola, Department of Physical Sciences, Ondo State University of Science and Technology, Okitipupa, Nigeria.

[4]    

Olanrewaju Ajanaku, Department of Physical Sciences, Ondo State University of Science and Technology, Okitipupa, Nigeria.

 
Abstract
 

This paper evaluates the magnetic field radiation produced from top-body and bottom-body of laptop computers in the normal operation condition when powered by alternating current and battery and the risk assessment of the magnetic field radiation as compared to the known reference limit. The magnetic field of 10 selected laptops was measured by an electromagnetic field (EMF) measuring device, Lutron EMF-828, at a position where the influence of the environmental magnetic field is negligible. The average magnetic field values obtained for the top-body when powered by alternating current range from 0.08 µT to 0.59 µT with the highest value of 1.88 µT while the average magnetic field values obtained for the top-body when powered by battery ranges from 0.11 µT to 0.31 µT with the highest value of 0.92 µT. The average magnetic field values obtained for the bottom-body when powered by alternating current range from 0.20 µT to 0.84 µT with the highest value of 2.40 µT, while the average magnetic field values obtained for the bottom-body when powered by battery range from 0.11 µT to 0.37 µT with the highest value of 0.95 µT. The values obtained showed that magnetic field radiations emitted are at the highest level when laptops were powered by alternating current, also the bottom-body parts of the laptop radiated the highest level of the magnetic field than the top-body parts. The danger areas of the magnetic field radiation exposure from laptop computers were established to warn users of possible radiological hazards. The user of a laptop computer should be positioned at some distance at which the magnetic field radiation is 0.4 µT or less.


Keywords
 

Alternating Current, Battery, Laptop Computer, Electromagnetic Field, Radiation, Risk Assessment


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