有三個燈泡,如果中間果個燈泡條燈絲斷左,咁隔離果兩個會唔會亮d?

2006-11-06 8:05 pm
有三個燈泡,如果中間果個燈泡條燈絲斷左,咁隔離果兩個燈泡會唔會亮d?

回答 (4)

2006-11-06 8:31 pm
✔ 最佳答案
請說明燈泡是串還是並的!
並的則沒有影響,因為每個燈泡都是獨立看自已的火數,
你有足夠的電流給它,它只會得一個亮度,因為佢唔會用更多的電流!
加電壓就會更亮,電壓大了電流才會更大,就會更亮了,但小心過了電壓燈泡會燒AND爆~
除非原本每個燈泡要1A,即TOTAL3A,但你只能提供2A,
那其一燒了,另外兩個就會更亮!
但如果是中聯,那其一燒了,全不會亮了!
參考: 自已
2006-11-06 9:25 pm
要看電源之電流輸出量和三個燈泡總耗電量,如果電流輸出總耗電量,1個燈泡條燈絲斷左就會出現其餘2個會較光亮。
例如電池(dc1.5v或以上)供電,電流輸出 細過 總耗電量,或剩餘電量很少和電壓有下降,便會1個燈泡條燈絲斷左就會出現其餘2個會較光亮。
例如市電(ac240v)供電,因電流輸出 大過 一般燈泡3個總耗電量,所以便不會出現這現象。
2006-11-06 8:16 pm
Depends on what curcuit is it in...

If it is in a parallel circuit, then the other light blub will still be operational.
But if it is in a series circuit, then all the light blub will NOT be in operation.

Think of it like those little light blubs you put on the christmas trees, they are ususally in series circuit. Therefore if one little light blubs is blown, the whole thing would not be flashing at all

Also look here for more info: http://en.wikipedia.org/wiki/Series_circuit
2006-11-06 8:12 pm
應該不會, 因為雖然電流是多了, 但是燈泡用的電都是咁多,所以是唔會光d.


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