Final answer:
Common electrical equipment operates at low frequencies of 50 or 60 Hz, while cell phones use frequencies in the microwave range, such as 880 MHz for 4G networks and 2.4 to 5 GHz for Wi-Fi. Although there have been health concerns regarding cell phone radiation, a firm link to brain cancer has not been definitively established.
Step-by-step explanation:
Frequencies of Radiation from Electrical Equipment and Cell Phones
The frequencies of radiation associated with common electrical equipment, such as high-voltage AC power transmission lines, are at the lower end of the spectrum, typically at 50 or 60 Hz. These radio frequencies have an extremely long wavelength, around 6000 km, and are a form of energy loss in long-distance power transmission. On the other hand, cell phones use electromagnetic waves in the microwave range for communication. Common frequencies for cell phones include those used by 4G cellular networks, which are approximately 880 MHz, while different technologies use a variety of ranges. For instance, Wi-Fi networks operate at 2.4 to 5 GHz, and GPS signals use frequencies like 1.228 and 1.575 GHz. It's also worth noting that there have been health concerns associated with the use of cell phones and their emission of radiofrequency radiation, although conclusive evidence linking cellphone use to brain cancer remains elusive.