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OCR Physics A Exam - G482 Electrons, Waves, Photons [09/06/16] watch

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    😥😥I just finished the exam.It's quite unusual than last years papers.


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    I'm considering the first question. Why X must be in the mid point.☹️☹️


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    Was such an odd paper really threw me off

    What was the current at A1?
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    (Original post by Hasib98)
    Was such an odd paper really threw me off

    What was the current at A1?
    I think I got 0.375 or something LOL I bet it's wrong though


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    (Original post by Zed Wu)
    I'm considering the first question. Why X must be in the mid point.☹️☹️


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    I didn't know what to write for that :// what did you write


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    Literally so bizarre. It went better than last year's I think, but honestly some of those questions were just????? No????????????

    The one with the two cells and internal resistance and direction of current was a mess :laugh: ah well. I can only improve on my last grade. Not sure if it would make an A though…
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    (Original post by FemaleBo55)
    How did everyone find it..
    I found it hard tbh... but it was sort of better than last year but still... I didn't understand the electro acceleration question

    Is anyone going to make the unofficial mark scheme for this paper


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    If you are talking about the question to find electron velocity its eV = 1/2 mv^2

    WHICH I LIKE A DOUCHE USED eV = h = mv for!!!!
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    (Original post by FemaleBo55)
    I didn't know what to write for that :// what did you write


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    I said that because it's midway L will be 1/2 stuff and things, mentioned I dividing in parallel but having to equal the same coming out of the junction, so A1 must equal current across variable + current at A2. Basically I BSed it and I'm hoping I pick up at least 1 mark for mentioning those things. That's all I ask LOL
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    (Original post by Zed Wu)
    I'm considering the first question. Why X must be in the mid point.☹️☹️


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    Because length is directly proportional to R, if L is halfed the current is doubled.
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    (Original post by Reda2)
    If you are talking about the question to find electron velocity its eV = 1/2 mv^2

    WHICH I LIKE A DOUCHE USED eV = h = mv for!!!!
    Same!!!


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    (Original post by FemaleBo55)
    I think I got 0.375 or something LOL I bet it's wrong though


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    I had that too! Pray for us ; - ;

    :cry::cry:
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    (Original post by FemaleBo55)
    I think I got 0.375 or something LOL I bet it's wrong though


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    OHHH i got 0.75 basically double your value, A1 was twice as A2 so you should have doubled it right? unless i completely wrong LOOL
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    I personally found it not bad, with some questions really weird, the stationary waves stuff! Hardest question of the paper.

    But guys I used eV = h / mv like an idiot for the velocity of the electron instead of eV = 1/2 mv^2. Will I get any sort of marks?

    And how many marks was that question?
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    (Original post by Reda2)
    I personally found it not bad, with some questions really weird, the stationary waves stuff! Hardest question of the paper.

    But guys I used eV = h / mv like an idiot for the velocity of the electron instead of eV = 1/2 mv^2. Will I get any sort of marks?

    And how many marks was that question?
    2? Maybe 3?
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    (Original post by Reda2)
    I personally found it not bad, with some questions really weird, the stationary waves stuff! Hardest question of the paper.

    But guys I used eV = h / mv like an idiot for the velocity of the electron instead of eV = 1/2 mv^2. Will I get any sort of marks?

    And how many marks was that question?
    wasn't it a show that tho
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    well I thought that was god awful! especially that question for five marks about an experiment to determine the internal resistance. i ****ed up
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    (Original post by Hasib98)
    wasn't it a show that tho
    Yes I know, the velocity was there, my velocity was a couple of powers off, I rushed it and I'm like, it's close enough move on!
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    What was weird was, there was no polarisation stuff, or was there and I just didn't get it lol?
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    (Original post by theialos)
    well I thought that was god awful! especially that question for five marks about an experiment to determine the internal resistance. i ****ed up
    I did V = E - Ir
    so V = I (-r) + E

    Plotted the graph V against I, gradient equal to -r.
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    (Original post by Reda2)
    I did V = E - Ir
    so V = I (-r) + E

    Plotted the graph V against I, gradient equal to -r.
    That's what I did too, what did you put for the reason for the second resistor?
 
 
 
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