information on light bulb

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Are you S.F.X.C.? I am !!!!
我想知如果我用一個好大電流supply i>0.8A 既power source...
電流依然係0.8A 因為LIGHT BULD 電阻不變...所以電流不變
因因V=IR R↑,i↓...但係light buld無變..所以電流不變

我想知如果我用一個好大電壓supply>2.5V
CIRCUIT 所損耗既ENERGY..係DEPENDS ON BULD既額定值..如果額定值大過2.5V
咁電路果2.5V就會比LIGHT BULD食哂...所以電阻既e.m.f..係depends on 額定值的...

light bulb 幾時先會燒左＜－－過熱－－＞電流過大．．咁咪燒

電壓是不是會影響電流

只有電阻會影響電流．．．
當然ｖ＝ｉｒ
ｖ越大，ｉ都會越大
light bulb+iron weight make it together with a string then put it into the cyclinder, use a displacement can to measure the unit of water go out, minus the iron weight, then you will know the answer
Bulb means:

1. almost round, thick, underground stern, sending roots downwards and leaves upwards, of such plants as the lily, onion, tulip.

2. sth like a bulb in shape, esp an electric lamp or swollen end of a glass tube, eg in a thermometer

Therefore, "bulb" can be used without "light"

For example, the bulb of a thermometer, or the bulb of an onion
你係唔係form2??

呢個其實係電線短路的實驗..
因為light bulb的電阻比switch大...
switch開著果
因為電阻比較細的原因..
電子會流去switch到..唔會去light bulb到..
咁light bulb就會冇energy..
light bulb就唔著..
相反..如果switch冇開的話
就只有一個path...
電子只可以流去light bulb..
light bulb就會著囉

check this out:
http://en.wikipedia.org/wiki/Light_bulb