A current of 5amp. Exist on a 10 ohm resistance for 4min. How much charge pass through any cross-section of the resistor in this time
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Answered by
4
5A of currents means 5 coulombs of charge is passing through the cross section in 1 second,
Thus, number of electron passing through the cross-section in 1 sec = 5/1.60x10^-19 = 3.125x10^19 electrons are passing through that cross section in 1 second.
So in 4 minutes, 3.125x10^19 x 240 electrons will pass through the cross section = 75 x 10^20 electrons.
Thus, number of electron passing through the cross-section in 1 sec = 5/1.60x10^-19 = 3.125x10^19 electrons are passing through that cross section in 1 second.
So in 4 minutes, 3.125x10^19 x 240 electrons will pass through the cross section = 75 x 10^20 electrons.
Answered by
2
the amount of charge is...
q = IT
where q is charge, I is current, T is time
time = 4/60 = 1/15 sec
q in 1 sec = 1.6*10^-19
I = 5A
therefore,
in one second,
1 sec = 5/1.6*10^-19
= 3.125 * 10^19 charge
hence,
in 1/15 sec
15 * 3.125 * 10^19
= 46.875 * 10^19
= 4.6875 * 10^20
q = IT
where q is charge, I is current, T is time
time = 4/60 = 1/15 sec
q in 1 sec = 1.6*10^-19
I = 5A
therefore,
in one second,
1 sec = 5/1.6*10^-19
= 3.125 * 10^19 charge
hence,
in 1/15 sec
15 * 3.125 * 10^19
= 46.875 * 10^19
= 4.6875 * 10^20
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