Calculate magnetic flux density of the magnetic field at the centre of a circular coil of 50 tunrs, having radius of 0.5 m and carrying a current of 5 A.
![International Geomagnetic Reference Field: the thirteenth generation | Earth, Planets and Space | Full Text International Geomagnetic Reference Field: the thirteenth generation | Earth, Planets and Space | Full Text](https://media.springernature.com/lw685/springer-static/image/art%3A10.1186%2Fs40623-020-01288-x/MediaObjects/40623_2020_1288_Figa_HTML.png)
International Geomagnetic Reference Field: the thirteenth generation | Earth, Planets and Space | Full Text
![Local distortion of the earth's magnetic field as a proposal for handling the leafcutter ant species Atta spp. (Hymenoptera: Formicidae) Local distortion of the earth's magnetic field as a proposal for handling the leafcutter ant species Atta spp. (Hymenoptera: Formicidae)](http://www.scielo.org.co/img/revistas/iei/v32n2/v32n2a06ec1.jpg)
Local distortion of the earth's magnetic field as a proposal for handling the leafcutter ant species Atta spp. (Hymenoptera: Formicidae)
![The decline of the intensity of the total magnetic field strength of... | Download Scientific Diagram The decline of the intensity of the total magnetic field strength of... | Download Scientific Diagram](https://www.researchgate.net/publication/281612324/figure/fig1/AS:616347734126599@1523960159322/The-decline-of-the-intensity-of-the-total-magnetic-field-strength-of-the-earth-blue.png)