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    Just finished the exam, how do you think it went?
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    (Original post by Paranoid_Glitch)
    Just finished the exam, how do you think it went?
    Good apart from the drift velocity question .
    Whats ratio did you get for the drift velocity and the resistance ?
    What did you do?
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    (Original post by Ahmedelkafrawy99)
    Good apart from the drift velocity question .
    Whats ratio did you get for the drift velocity and the resistance ?
    What did you do?
    Got it as 4 most of my friends got it as 8. Used pid^2/4 to get the area, but i never accounted for the change in the number density. I think changing the cross sectional also changes the number density. The restistance was 2 just used the resistance equation, Resistance=Resistivity*Length/Cross sectional Area. I think the power ratio was the same as resistance?
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    (Original post by Ahmedelkafrawy99)
    Good apart from the drift velocity question .
    Whats ratio did you get for the drift velocity and the resistance ?
    What did you do?
    What did you say for the momentum question, where it asked whether or not it was conserved?
 
 
 
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