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# number of electrons watch

1. 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
2. 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.
3. (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?
4. No, that's too high. It's around 2.25*10^20
5. (Original post by nichu)
1.6*10^-19*90?
6. (Original post by uberteknik)
Oh thanks a lot, i got it

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