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    Who is ready to ace Physics
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    (Original post by homeland.lsw)
    What part of P3 exactly :console:
    Transformers and Fleming's left hand rule. Which way does the current pass through ? Really don't like Physics
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    (Original post by homeland.lsw)
    What part of P3 exactly :console:
    I hate the final calculation parts of the Lenses section. :cry:
    Spoiler:
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    I am literally only starting P3 now. The worst thing is P3 is the hardest (but also the best) part of the entire spec, and I really wanna do well. :sigh:
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    (Original post by nisha.sri)
    Transformers and Fleming's left hand rule. Which way does the current pass through ? Really don't like Physics
    Flemings left hand rule?
    ThuMb - Movement (of wire or whatever)
    First finger - Field (direction of magnetic field)
    SeCond finger- Direction of Current

    And transformers?
    Step up, increases the pd from the first coil to the second coil
    Step down, decreases the pd from the first coil to the second coil

    There is a soft iron core in the centre (as it is magnetic)

    An alternating current is passed through the primary coils, it produces a magnetic field that continuously changes direction. The soft iron core increases the strength of the magnetic field. The secondary coil cuts through the changing magnetic field, inducing an alternating potential difference across the ends of the coil.
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    (Original post by ||TheUnknown||)
    I hate the final calculation parts of the Lenses section. :cry:
    Spoiler:
    Show
    I am literally only starting P3 now. The worst thing is P3 is the hardest (but also the best) part of the entire spec, and I really wanna do well. :sigh:
    Like magnification?
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    (Original post by homeland.lsw)
    Like magnification?
    Yep.
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    (Original post by ||TheUnknown||)
    Yep.
    it's just IMAGE height over OBJECT height

    and to calculate POWER (IN DIOPTRES) it's 1 over the FOCAL LENGTH (which is in metres)
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    Worst exams I've ever done in my life BY FAR.
    Anyone else?


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    (Original post by vault111)
    Worst exams I've ever done in my life BY FAR.
    Anyone else?


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    Same!


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    (Original post by vault111)
    Worst exams I've ever done in my life BY FAR.
    Anyone else?


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    Ohhhhh yes. Awful.
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    At least we're all in the same boat: if we found it hard, it's likely that the grade boundaries will be VERY low indeed


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    (Original post by vault111)
    Worst exams I've ever done in my life BY FAR.
    Anyone else?


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    ME TOO
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    (Original post by vault111)
    At least we're all in the same boat: if we found it hard, it's likely that the grade boundaries will be VERY low indeed


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    Hope so!
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    I found them alright... :erm:
    Anywho, they are over which is great!!!!
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    (Original post by homeland.lsw)
    I found them alright... :erm:
    Anywho, they are over which is great!!!!
    Well P3 was not too bad but P2....
    Well done anyways! Now we can relax
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    (Original post by Megan1404)
    Well P3 was not too bad but P2....
    Well done anyways! Now we can relax
    Agreed!!!._.
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    P2 was some sort of fresh hell.
    P3.. wasn't so bad.
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    so true
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    Both of them were as bad as each other
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    The worst exams I've done so far, if the grade boundaries don't drop by a lot then oh my ...


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