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science,math and English

No.22　11/08/18 03:56
名無し0 ( 50代 ♂ ) あ+あ-

【Electric current and voltage】

『Pressure which sends electric current is voltage』

When hearing story about electricity,we always hear a word of voltage.It literally means pressure of electricity. Its unit is V.😃

As for a power source 電源 of voltage,if looking around us,the voltage of the power source for a household is 100V, and other voltage of a dry cell is 1.5V and another one of battery for a car is about 12V.🚗

Why are there difference between them?As for the amount of consumption of electricity,electric appliance is varied.🙋

For instance,while an air conditioner ｴｱｺﾝ and a microwave oven 電子ﾚﾝｼﾞ need lots of electricity,an alarm clock and a CD player don't need so much.⏰

Therefore,if connecting the air conditioner to electricity with low voltage,electric current isn't sent enough,so it won't work enough.😠

Contrary to it,if connecting the alarm clock to electricity with high voltage,it won't work efficiently.

In short,voltage of each power source is set up efficiently for electric appliance