Question

 Why do we in Europe use 220 and in USA they use 110 volts?

Answer Cause they American....
http://answers.yahoo.com//question/index?qid=20080202081414AAMvmEt

Top Q&A For: Why do we in Europe use 220 and in USA they use...

Can you use 220 volts 60 hertz South Korean home appliances vacuum cleaner iron fans etc in Europe or in Bangladesh at 220 volts 50 hertz?

The information given in the answer to the Related Question shown below may be relevant.
http://wiki.answers.com/Q/Can_you_use_220_volts_60_hertz_South_Korean_home_appliances_v...

I Have 12 Volts output source with 1000mAh. Can i charge 5.1 volts device with 500mAh and charge 9Volts Devi?

You would use a resistor or voltage regulator in series with each device. Note the difference between mA and mAh.
http://answers.yahoo.com/question/index?qid=20130430065921AAh6yt8

Does 120 volts harm 240 volts appliances?

Answer for USA, Canada and countries running a 60 Hz power supply service. YOU SHOULD NOT BE THINKING OF DOING THIS!It may not harm them but they won't work! For more information, please see the... Read More »
http://wiki.answers.com/Q/Does_120_volts_harm_240_volts_appliances

How to Convert 12 Volts to Negative 12 Volts?

Voltage is the difference in electric potential between two points, which creates the force that drives current through a wire connecting those two points. A source of voltage, such as a battery, u... Read More »
http://www.ehow.com/how_7342395_convert-volts-negative-12-volts.html


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