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# At what voltage and frequency is the a.c. supplied to our houses?A. $240\,V,\,50\,Hz$B. $220\,V,\,100\,Hz$C. $220\,V,\,50\,Hz$D. $260\,V,\,50\,Hz$

Last updated date: 13th Jun 2024
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Hint:Alternating current is supplied to our houses as it is easier to distribute over large distances with very low losses and a bit safer. The voltage in our homes is in the range of $220\,V - 240\,V$ . The voltage and frequency used in most of Asia, South America and Australia is of $220\,V - 230\,V,\,50\,Hz$

The electricity line in Indian houses comprises three wires; live wire, neutral wire, and the Earth wire. The live wire has a potential of $220\,V$ and the neutral wire has zero potential. As a result, the potential difference is $220\,V$ .
In India, the AC supplied is of $220\,V$ . The rate at which the current reverses direction is known as frequency. The standard frequency in India is $50\,Hz$ .
Note: Remember that the voltage for houses in India is $220\,V$ and the frequency is of $50\,Hz$.In other countries, USA the electric power line has voltage of $110\,V - 120\,V$. The fans, tube lights in Indian trains are supplied with $110\,V$ DC and their operating voltage is $90\,V - 140\,V$ . These protect against theft of electric appliances as they won’t be useful at homes.Dynamos and transformers are used to maintain the potential drops.