Abstract: In this study, an investigation of “Exposure to electromagnetic fields” “EMF” and its effectiveness on health in this study case the range of frequencies, that was included with the extent of the wireless communication including low power to high power, i.e., from “Wi-Fi” to “satellite” communication and microwaves. Also, this study a discussion on the wireless power transmission “WPT” that is based on an oscillation circuit was included. From the scientific studies and survey the power of “EMF” which considered less than “3 GHz frequency” does not affect the human health.