What country has the 220 volt?

What is the LUX of a 400 watt metal halide? Integrated circuit? What was Thomas Edison's occupation? Explain the principle of operation of a 3 phase induction motor with the help of relevant vector diagrams on no load and load? An inductor is a device that opposes the? What happens to the current of the wire when the length increases? What is a flux capaciter? Can power inverter work for 24 hours? What are the limitations of a moddel torch circuit compared to the real actual circuit? Hydropower generates electricity when dams force flowing water past .? Why has electricity become an issue? How do you wire a french light switch? Which type of tape is used to round sharp edges on electrical splices using larger conductors? Truth table for 3 input xor gate? What was tesla's AC system? How many kva need in 30hp motor 3phase? Secretary of PNP? How do I safely connect the wiring for an outdoor light to be used inside to a stripped extension cord that can be plugged into an outlet? Why inductors are not used in active filters? What is square law diode modulator?