R456 is correct. R4 and R56 are in series.I have calculated resistors in parallel, so R23 ended up being 150ohm, and R56 being 100. From there i used knowledge about resistors in series, and now i have two resistors. R123 being 350 ohm, and R456 being 300 ohm. From there on im not quite sure what to do?
Resistors in series ADD. R1=300 Ohm, R23456=100 Ohm. R=R1+R23456=400 OhmI see.
So i use resistors in parallel and R23 in parallel with R456 gives me a new resistance of 100 ohm. Now they are in series. Then i can multiply, giving me an resistance of 300 ohm for the whole circuit. What now then?
So calculate the current, I, i use the formula I =V/R, but because i don't know the V, i can calculate my V from amps, and watt. Therefore i calculate my Power, W using P = I^2 * R = 10.800. Then calculating V by using I and V gives me 1800 V. Now i use the formula I = 1800/300 = 6 amp, which is the number i now from the start?
Am i totally wrong here?
That's advanced college way of doing things. I am pretty sure OP wants to acquire this advanced skill through painful experience.Some people redraw the circuit with each step so they can clearly follow their own thinking.
Use Paint (or other drawing software that comes with virtually all operating systems). Use boxes for the resistors.Btw. i am redrawing on papir by my side, i just don't have the possibility to upload, so therefore explaining and making it clearer for myself.
It's simply the easiest value to work with. You can pick whatever value you like, since at the end you are going to scale it to the correct value.Where did the 1V come from?
Another technique is to create a table ... so you can fill in the answers as you develop them ... and double check them using KVL and KCL.
Okay, so with a 1V source you would have a current of I = 1V/400Ω = 2.5 mA.Can you maybe elaborate what? Is there a specific way to do it with a current source? Because it is not something i have heard of so far?
I know it when it is a voltage source, by using I = V/R.
When i do it your way, it gives: I = 1/400 = 0,0025 Amps
What can i say from that? It is that part of current through the resistor that confuses me, because i know it is 6 Amps. from the start, and by calculating it also gives me 6 Amps. and that is current, I....
We are going to have some confusion because you use the , as the radix and . as the thousands separator whereas as most of us do the opposite. We'll just have to work through it.I would need to multiply by 2.400, so its putting out 2.400 V?
There are lots of ways to solve this problem. If you reduce the circuit to a single resistor you have 400 Ω and you know that 6 A is flowing through it. Thus you know that the applied voltage is 2400 V. What is the voltage drop across R1? That will let you get the voltage across R2 and R3, from which you can calculate the currents in those two resistors. After subtracting those currents from the 6A, you have the current in R4, from which you can calculate the drop across R4 to get the voltage across R5 and R6, from which you can calculate the currents in those two resistors. Since those resistors are equal, you also know that the currents splits and so has to be half of the current in R4, so you have a built in check. None of those computations involves math that you shouldn't be able to do in your head. They key is to be systematic and walk from one end of the circuit to the other.It all adds up to the 6 amps which is already given from the start, so the current flowing through the resistor is just the 6 amps, now i have just showed it by calculation? Gesh, it's some rather complicated questions.. or at least to get the correct info
by Aaron Carman
by Jake Hertz
by Jake Hertz
by Aaron Carman