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    (Original post by simon105)
    Do you lot think it's possible to do just one single whole day of revision the day before and still get an A?
    You could get an A. But it depends on how confident you feel.
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    How do you calculate the specific charge of an ion?


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    (Original post by Jimmy20002012)
    How do you calculate the specific charge of an ion?


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    Specific charge = charge divided by mass....
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    (Original post by Jimmy20002012)
    How do you calculate the specific charge of an ion?


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    With what information ?

    I would have thought, by applying an electric field... but you don't need to know any of that until A2
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    (Original post by StalkeR47)
    You could get an A. But it depends on how confident you feel.
    Well, not very. What topics are on unit 1 apart from electricity and particle physics?


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    (Original post by simon105)
    Do you lot think it's possible to do just one single whole day of revision the day before and still get an A?
    That's what I want to know haha, doing a retake and left all my revision to now XD
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    (Original post by Jimmy20002012)
    How do you calculate the specific charge of an ion?


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    Hey Jimmy! I did this question for you. Sorry for the poor quality. This should give you a better understanding on diodes in parallel and series. (and in opposite sides)
    Attached Images
     
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    (Original post by simon105)
    Well, not very. What topics are on unit 1 apart from electricity and particle physics?


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    Quantum is another chapter.
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    LOL I did a question on diodes for Jimmy20002013 and he is offline. HAHA
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    Wow you guys are keen.
    Revising physics at one am.

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    (Original post by x-Sophie-x)
    Wow you guys are keen.
    Revising physics at one am.

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    Hello Sophie. I am done for now lol. I just did a question on diode and posted my question with all the solutions for Jimmy. And now he is already offline. My attachment is up there. Anyway, whu? How was your maths exam the day before yesterday. I even posted the same question on the last post.:rolleyes:
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    (Original post by StalkeR47)
    LOL I did a question on diodes for Jimmy20002013 and he is offline. HAHA
    I am back! Thanks for the solution, think I fully understand now


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    (Original post by Jimmy20002012)
    I am back! Thanks for the solution, think I fully understand now


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    Can you actually read the answers? I know it is a poor quality. Download the image and rotate it clockwise 90degrees. It is a really good question. It covers every rule for a diode.
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    (Original post by StalkeR47)
    Can you actually read the answers? I know it is a poor quality. Download the image and rotate it clockwise 90degrees. It is a really good question. It covers every rule for a diode.
    Is that the hardest type of diode question that we could get ?


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    (Original post by Jimmy20002012)
    Is that the hardest type of diode question that we could get ?


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    Yes definitely! btw Q is 10K Ohm
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    Why does X= 2.4V when the resistor is equal to 0.6V, could you quickly explain?


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    (Original post by Jimmy20002012)
    Why does X= 2.4V when the resistor is equal to 0.6V, could you quickly explain?


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    3V is a total voltage. since diode is in forward direction with a resistor, it will require 3-0.6=2.4V. (remember, a diode requires 0.6V to let the current through). If the diode was is series with resistor Q and in forward bias. diode will be 0.6V and resistor Q will be 2.4 instead. (it is opposite when diode is in parallel). Got it?
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    (Original post by StalkeR47)
    3V is a total voltage. since diode is in forward direction with a resistor, it will require 3-0.6=2.4V. (remember, a diode requires 0.6V to let the current through). If the diode was is series with resistor Q and in forward bias. diode will be 0.6V and resistor Q will be 2.4 instead. (it is opposite when diode is in parallel). Got it?
    Why is P 2.4 then?


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    (Original post by Jimmy20002012)
    Why is P 2.4 then?


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    Q is 0.6V because diode is in forward and in parallel. P is 2.4 because diode is reversed and in parallel.
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    (Original post by x-Sophie-x)
    Wow you guys are keen.
    Revising physics at one am.

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    Desperate times, desperate measures...


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