Recent content by Ng Sio Hong

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    How does a high-speed rail work/operate?

    This is for a college assignment that is due in 2 weeks. I have tried searching everywhere for answers but nothing useful comes up. I want to understand how mechanisms inside a high-speed rail are able to cause the train to move. Any answers?
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    Why is my D.C. ammeter reading fluctuating?

    Hi Dave! First of all, apologies for not making my statement a little bit more clearer. The experiment that I'm currently doing is measuring magnetic force with a basic current balance where the current is supposed to always stay at a constant 0.4 A. The thing is, it always fluctuate and I do...
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    Why is my D.C. ammeter reading fluctuating?

    Why is the reading on my D.C. ammeter fluctuating? As in the needle won't maintain at one spot, it'll sway left and right. Also, how do i ensure that the fluctuations are minimized?
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    Errors in basic current balance experiment?

    Hi guys, so I'm having a little trouble completing my physics lab report here due to not being able to find many errors to discuss about. The experiment that I conducted makes use of a basic current balance: http://www.pasco.com/prodCatalog/SF/SF-8607_basic-current-balance/ As you all know...
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