點解當一個充滿水嘅手指掂到中線個插制洞唔會觸電,
但掂到活線個洞會ga??
我知佢地係交流電,應該兩個洞都會觸電嫁,點解唔係ga??
唔該解釋一下!!
PHY(domestic circuit)
2008-10-24 7:46 am
回答 (2)
2008-10-24 7:17 pm
✔ 最佳答案
Only the hole of live was connect to the AC voltage source, the neutral is kept to be zero voltage. The voltage of the live is AC, from +200 to -220V in HK. Neutral acts as the return path back to the power station for completing the circuit.
2008-10-25 7:53 am
The potential of the neutral hole is ALWAYS kept at earth potential (i.e. zero volt). As such, there is no potential difference between your finger and your body when you touch the neutral hole. No current would flow through your body.
收錄日期: 2021-04-29 17:26:41
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081023000051KK02505