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    a conductor carries a current of 0.4A. find the amount of charge that will pass through the cross-section of the conductor in 1.5 minutes. how many electrons will flow in this time interval? given charge on an electron= 1.6*10^-19
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    1A = 1Cs-¹
    1C = 1/(1.6*10^19) electrons

    So essentially multiply the current by the number of electrons per coulomb, and multiple that by the time IN SECONDS.

    number of electrons = time * electrons per coulomb * current.
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    (Original post by jsk800)
    1A = 1Cs-¹
    1C = 1/(1.6*10^19) electrons

    So essentially multiply the current by the number of electrons per coulomb, and multiple that by the time IN SECONDS.

    number of electrons = time * electrons per coulomb * current.
    1.6*10^-19*90?
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    No, that's too high. It's around 2.25*10^20
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    (Original post by nichu)
    1.6*10^-19*90?
    \frac{1}{1.6 \text{x} 10^{-19}} \text{ x } 90
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    (Original post by uberteknik)
    \frac{1}{1.6 \text{x} 10^{-19}} \text{ x } 90
    Oh thanks a lot, i got it
 
 
 
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