Why USA use 110v/60Hz instead of 230V/50hz ? Look at this picture.. Well there is not any technical reason for this, its just historic. We all know Thomas alva Edison invented practical incandescent bulb that glows on direct current more than 1500hrs in 1880’s. Untill that bulbs were always connected to the battery. So then he decides build a transmission system to implement his invention in all house hold and streets in America. In 1882, he build power plant in Newyork which is said to be the first commercial power plant. Edison intended to give 100V supply to consumers and build a 110V dc generating powerplant so that extra 10V (which is 10%) will compensate the loss that occurs due to the resistance of the transmission lines. But due to this low voltage, a high current flows through transmission lines and hence the I^2R losses increases resulting a high voltage drop. Due to the drop, 110v was only capable for a transmiss...