what is the voltage and frequency of ac current supplied for domestic purpose

The voltage and frequency of AC current supplied for domestic purposes vary between regions and countries. In much of the world, a voltage of 230 volts and frequency of 50 Hz is used, while in North America, the most common combination is 120 volts and a frequency of 60 Hz. However, there are many other combinations of voltage and utility frequency that were formerly used, with frequencies between 25 Hz and 133 Hz and voltages from 100 V to 250 V. The standard in the United States is 120V and 60Hz AC electricity, while the standard in Australia is 220V and 50Hz AC electricity. Most countries use 50 Hz as their AC frequency, while only a handful use 60 Hz. The voltage and frequency of alternating current (AC) electricity used in homes varies from country to country throughout the world. In general, electrical power in the form of AC is produced by most power plants and distributed by a majority of electrical grids. It is the typical form of electricity delivered to our homes, businesses, and industries.