Times Of Electric

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...

Voltage or Current. Which is the real killer? Hey guys, This might be the most controversial   this or that question after the famous chicken or egg. Lets see it clearly, It is not the high current or high voltage that kills you.        Take  for eg., a 24V   battery can produce much higher current than the wall socket (in the range of 10-15 amps) in our home does.  Still it can’t electrocute us if we touch both the terminals.       So what it is? Is it the high voltage that kills us. No, it is not for sure.       To get clear about this take an example of Van de graaff generator what you might have heard in high schools or in youtube videos. So a large Van de graaff generator  can produce 500000 volts or 500kv , but we had seen a stranger touching the sphere with his bare hand. The reason here is the over all rated output current generated in Van de graaff is in th...