http://i150.photobucket.com/albums/s87/mllokloks/456.jpg
If the number of turns in secondary coil is increase.
What will happen of the brightness of the light bulb ?
點解會光左,乜唔係
P input = P output
錦brightness應該冇變 ....
會考物理-變壓器
2008-04-04 10:34 pm
回答 (2)
2008-04-05 4:29 am
✔ 最佳答案
當初級電壓同圈數不變，增加次級綫圈既圈數，電壓就會增加，當負載電阻不變，電壓增加電流相應增加，電壓電流增加功率就增加，輸入功率又會增加，同時光亮也增加。但係，如果變壓器既鐵心唔夠大，就會發熱，甚至燒牛。
2008-04-05 3:49 am
As you know
N(primary coil) /N(Secondary coil)=V(primary coil)/V(Secondary coil)
if number of turns in primary coil and Voltent of primary coil are constant,
N∞K
when the number of turns in secondary coil is increase
V is increase .
2008-04-04 19:50:06 補充：
N∞V
N(primary coil) /N(Secondary coil)=V(primary coil)/V(Secondary coil)
if number of turns in primary coil and Voltent of primary coil are constant,
N∞K
when the number of turns in secondary coil is increase
V is increase .
2008-04-04 19:50:06 補充：
N∞V
收錄日期: 2021-04-25 20:35:52
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https://hk.answers.yahoo.com/question/index?qid=20080404000051KK01368