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    (Original post by andersson)
    It allows the current to flow through the C and the E, but I have a feeling the current from the B also flows out the E, because the current at the E = the current at the C + the current at the B.

    I think we're the victims of GCSE over-simplification again because they don't tell us what happens to the current at the B.
    Wait, so does the base current only act as a gate allowing current to flow from the collector to the emitter (rather than the base sending a current to both the emitter and collector)?

    Yeah, can't wait until the physics exam is over tomorrow- no more simplification (on the same scale) at A Level! :cool:


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    (Original post by ryanb97)
    47
    Last years exam..137... Oh I might need a very low A:dontknow::smug::yy:

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    In that case I'll (approximately) need a high-A to a low-A* (l'evil ) for my A* overall
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    (Original post by L'Evil Fish)
    Well I thought chem was too easy but yeah probably
    Think I got over 70 in chem so I should be fine
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    (Original post by BP_Tranquility)
    Wait, so does the base current only act as a gate allowing current to flow from the collector to the emitter (rather than the base sending a current to both the emitter and collector)?

    Yeah, can't wait until the physics exam is over tomorrow- no more simplification (on the same scale) at A Level! :cool:


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    Yeah think of it that way, that's good! It metaphorically opens a gate for the current to flow through the C and the E - but don't forget, the current supplied to the B also flows out the E.

    We're doing almost identical A levels (I think they actually are identical:confused:) so I'll see you on the future threads and we can enjoy the better explained stuff together
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    (Original post by BP_Tranquility)
    Wait, so does the base current only act as a gate allowing current to flow from the collector to the emitter (rather than the base sending a current to both the emitter and collector)?

    Yeah, can't wait until the physics exam is over tomorrow- no more simplification (on the same scale) at A Level! :cool:


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    Imagine:

    |/
    |\

    The | bits, are the base, imagine there's no gap between those two || lines... Now when there's a small current, it pushed it connecting the emitter and.collecter. Or the \ and /
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    (Original post by L'Evil Fish)
    These boundaries are gonna be incredibly low... I'd say 50 an A* is very likely

    I mean even us here were struggling with P6
    50 seems high!


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    (Original post by Zippyzazu)
    hahahahahaha yes. :confused:

    :awesome:
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    So im thinking this is everyones last exam :smug:

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    (Original post by andersson)
    In that case I'll (approximately) need a high-A to a low-A* (l'evil ) for my A* overall
    I see, thanks- that's it for my last minute revision today

    We're both taking the same A levels (I remember talking about it on the chemistry thread)- the only subject where we're on different exam boards is physics


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    (Original post by L'Evil Fish)
    Imagine:

    |/
    |\

    The | bits, are the base, imagine there's no gap between those two || lines... Now when there's a small current, it pushed it connecting the emitter and.collecter. Or the \ and /
    That's an interesting way of explaining it- but it makes more sense now, thanks


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    (Original post by ryanb97)
    So im thinking this is everyones last exam :smug:

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    Na, L'Evil Fish and I both have statistics a week later


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    (Original post by BP_Tranquility)
    Na, L'Evil Fish and I both have statistics a week later


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    Try this

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    Attached Images
     
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    (Original post by benwalters1996)
    50 seems high!


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    I meant sub 50
    (Original post by BP_Tranquility)
    That's an interesting way of explaining it- but it makes more sense now, thanks


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    Np!
    (Original post by BP_Tranquility)
    Na, L'Evil Fish and I both have statistics a week later


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    Yay, I've completely finished the CGP question booklet!

    My weakest topics are definitely the motor/generator/EM induction ones, they're the most abstract topics so they're harder to understand.
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    (Original post by andersson)
    Yay, I've completely finished the CGP question booklet!

    My weakest topics are definitely the motor/generator/EM induction ones, they're the most abstract topics so they're harder to understand.
    I think mine are lens' and stuff...capacitors

    Im going to go over it all now

    I dont think the "have a good nighys sleep before the night of your exam" makes a difference to me :smug::mmm:

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    (Original post by ryanb97)
    Try this

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    Can't be bothered to give a full response but this is what is include -
    Light- transverse wave with the particles vibrating at 90 degrees to the direction of the wave
    Sound- longitudinal wave with particles vibrating parallel to the directions of the wave

    Light- longer the wavelength, the lower the frequency. This wave carries less energy but can be used in communications.
    Sound- shorter wavelength, high the frequency so the wave carries more energy and can be used in medical applications- eg ultrasound

    Amplitude- only affects sound waves (I think)- higher amplitude results in a louder sound

    Light waves can travel through vacuum and moves as an EM wave. Sound can't travel through vacuum and moves as vibrating particles containing compressions and rarefactions



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    (Original post by ryanb97)
    Try this

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    That's a great question, I hope it comes up! I wrote 2/3rds of a sheet of A4 and still had loads more to write about :lol:
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    (Original post by ryanb97)
    I think mine are lens' and stuff...capacitors

    Im going to go over it all now

    I dont think the "have a good nighys sleep before the night of your exam" makes a difference to me :smug::mmm:

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    Me neither, as long as I have coffee in the morning I'll be ready and raring to go!
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    (Original post by BP_Tranquility)

    Amplitude- only affects sound waves (I think)- higher amplitude results in a louder sound




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    I think a higher amplitude means the wave has more energy, so for light it might make it brighter
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    I'm going to go to sleep now. Good Luck to everyone for the exam!! Thanks everyone for the help in all the sciences
 
 
 
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