How do i find out how many electrons flow by using amps, volts and seconds?

Answer 1

[^ indicates an exponent; 10^18 is ten to the 18 power]


1 amp = 1 coulomb/sec

1 coulomb = 6.3 x 10^18 electrons


The current, I, is measured in amps.
The voltage, V, is measured in volts.
The resistance, R, is measured in ohms = volts/ampere

I = V/R

Ex: if V = 4 volts and R = 2 ohms, then I = 4 /2 = 2 amps

= 2 coulombs/sec = 2(6.3 x 10^18)e/sec = 12.6 x 10^18 e/sec

= 1.26 x 10^19 electrons/sec

Answer 2

Well, amps is coulombs per second. If you know how many Amps you are using, use this formula:A=Amperes(amps), C=Coloumbs, s=seconds

A=C/s, or C=A*s

Once you find your number of Coulombs,use this formula to find Farads: F=farads, V=voltage

C=F*V, F=C/V

1 Farad is the electrical charge of 1 mole of electrons.(actually it's negative 1, but for practical purposes in finding quantity, I'll use positive 1.)

1 mole=6.0221367 x (10^23) electrons, or
602,213,670,000,000,000,000,000 electrons


The total equation would be

Number of electrons=
((Amps*seconds)/volts)*(6.0221367 x (10^23))

just plug the numbers in. Now your number electrons is exact and precise to the exact second, so if you plug 5 seconds into the equation, you'll get the exact number of electrons for 5.000000000 seconds.

The person below me actually missed the fact that Voltage changes the charge of a coulomb. It's kind of like changing the amplitude of a wavelength. With a higher voltage, you can have higher electron flow with lower amperage. I know this because I had to learn why 480 volt 3 phase motors last longer that 120 volt single phase motors.

Answer 3

It is enough if you know the current alone.

Current is the rate of flow of charges; the amount of charges that flow across a point in one second.

1 ampere of current means 1 coulomb of charge is flowing per second.

The charge of an electron is 1.602192 x 10 ^ (-19) coulomb.

Or 1 coulomb means 6.2414492 x 10 ^ 18 electrons.

1 ampere current means 6.2414492 x 10 ^ 18 electrons are flowing per second.

If A is the current the number of electrons flowing is
A x 6.2414492 x 10 ^ 18 electrons per second.

Answer 4

You don't need to know the volts. All you need is the amperes and the time. There are tables that will tell you how many electrons flow past any given point in a circuit in a given amount of time.

hint: google "Gizmologits Lair"....you may have to hunt for it, as there is a TON of information on that site.

Answer 5

if i remember properly
Q=it
Q=no of charges
i=current
t=time