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2011-07-21 9:46 am
左手FBI 個 B只係一條直手指左手FBI定理只係 磁場B係直線先可以用如果磁場B係一個個圈圈黎如何用左手fleming left hand rule定理??
更新1:

隻手指係直線 @@

回答 (1)

2011-07-21 5:02 pm
✔ 最佳答案
The direction of the magnetic field at a point for circular field lines is the direction of the tangent to that point.

Hence, when you apply Fleming's Left Hand Rule to a particular point on a circular magentic field, your finger should point on the direction of the tangent to that point.


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