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    • Thread Starter

    Hello guys,

    i still can't seem to understand how to use FLHR to deduce the charge of a particle in particle detectors. I know that positive particles move in the direction of current yet I still end up making the same mistake on every past paper I solve.

    anyone care to explain please?

    (doing my IAL unit 4 physics on monday)

    examples of questions here:
    Attached Images

    And what mistake is that?

    people can get confused about what the direction of the particle is when the track is spiralling like that - you just need to pick a single point on the path and see which way the particle is being accelerated at that point... e.g. pick a point where the track is going horizontally left to right and see if the position of the particle goes up or down further along it's path.
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