Does "the number of electrons traveling trough (per square centimeter per second)", tell me the conductance of a circuit with resistors connected in serial/parallel? Or not quite and are they just remotely connected words?
2007-10-17 16:34:38 · 5 answers · asked by me c 2 in Science & Mathematics ➔ Engineering
The number of electrons, multiplied by a constant, is the charge. The number of electrons per second is the current. Divide the current by the voltage it takes to get it to find conductance.
2007-10-17 17:39:29 · answer #1 · answered by ancient_nerd 2 · 0⤊ 0⤋
Is= 11ma or .011 a I1= 2ma or .002 a I2= 4ma or .004 a I3= 5ma or .005 a Total resistance= 1.818 k ohms Ok, we know that E(voltage)= I (amps) x R (resistance) In parallel circuits E is constant in each branch. So we have 20 volts going across each resistor. That means finding the I for each branch is simply dividing the E by the R. Now that we have the I for each branch, we look at the fact Is is the equivelent to I1+I2+I3..... for parallel circuits. Now that we have Is and E, we can divide E by Is to find the total resistance of the circuit. Or you can take the reciprocal of R1, add that to the reciprocal of R2, add that to the reciprocal of R3 (so on untill your out of parallel legs) then reciprocate that total to find the total resistance of the circuit. Im not sure what they are looking for when they are asking for total conductance in the network.
2016-05-23 07:03:45 · answer #2 · answered by patrice 3 · 0⤊ 0⤋
the previous is correct conductance= admittance = 1/resistance, but the first is incorrect. Admittances/conductances is used all the time in EE. the gain of a MOS and BJT is described by the gm = transconuctance. In RF/Microwaves the smith chart is a normalized admittance curve. RF microelectronics are easily solved using Y (admittance) parameters.
2007-10-17 17:09:28 · answer #3 · answered by nisaiz3000 2 · 0⤊ 0⤋
It does speak to conductance, although you will seldom hear things described in that form. If one is dealing with a network of resistors, the usual drill is to use Norton and Thevenin equivalent circuits to figure out what is going on. (These are fancy terms for E = IR.)
2007-10-17 16:42:25 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Resistance and conductance are reciprocal of each other.
The resistance is a measure of how difficult it is to pass the current whereas conductance is how easy it is to pass the current.
conductance=1/resistance
Interestingly enough, the unit for resistance is OHM. The unit for conductance is MHO (pronounced "Mow"), backwards of ohm!
2007-10-17 16:42:34 · answer #5 · answered by tkquestion 7 · 0⤊ 0⤋