→ zealeliot:沒有抵銷阿 上面邊磁力較強 因為磁場比較大 04/15 18:17
→ HDT:B=kz 所以磁場和z有關啊 即使抵銷也只有左右兩邊抵銷而已 04/15 18:17
→ mouwat:F=qVXB 你怎麼算到0的 04/15 22:04
→ linbanden:我終於了解了，都沒注意到這個小地方，謝謝大家的解答 04/15 23:23
[領域] 電磁學
[來源] Introduction to electrodynamics
[題目] p.214 problem 5.4
Suppose that the magnetic field in some region has the form
B=kz (x direction)
find the force on a square loop(side a), lying in the yz plane and centered
at the origin, if it carries a current I ,flowing counterclockwise, whenyou
look down the x axis
answer:Ika^2 (z direcation)
[瓶頸]
我怎麼想都覺得合力=0，四個邊不是互相抵銷嗎?
可能是小弟不才不能了解吧! = =
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