Why do we use 220V electricity but in some countries 110V is used?
Answers
Answer:
The oldest120V (AC) incandescent lightbulb did not have a filament that could not run on 220V and when a suitable filament because available, there was already too much infrastructure to go scrap it and do it over, despite built-in power losses
is right. In most residences and small businesses in North America, the voltage received from local transformers, connected to very long power transmission lines, is 240 Volts. At the mains, or electrical service installation at the site, electricity is distributed by way of three-wire, single phase AC (alternating current).
This basic set up allows for a house to power its stove/oven and household clothes dryer on a 220/240 V service. The remaining outlets with different receptacles, have what are typically called 110/120 V outlets (in the US and Japan)
If a clothes dryer requires 2200 Watts of power (power as a rate of consumption):
P = IV
2200W = (10 Amps) 220 Volts
or
2200W = (~20 Amps) 110 Volts
Explanation:
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