[問題] 接地的效果?
一個電路一定要是封閉的才會形成電流嗎?
下面的電路 B燈泡會亮嗎?
__________
| |_________
| | |
_____ ○A ○ B
--- | |
|__________| _____
___
___
如果不會的話,那我們手去碰插座怎麼會被電到,驗電筆又怎麼會亮呢?
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◆ From: 114.33.214.73
※ 編輯: j19951102 來自: 114.33.214.73 (03/13 19:50)
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