How to Calculate Circuit Current with U=3V and Four Equal Resistors R1=R2=R3=R4=R?

here is the content CALCULATE THE CURRENT CIRCUIT. DATA: U = 3V, R1 = R2 = R3 = R4 = R, R3OM HERE'S THE DRAWING. HELP IN SOLUTION, THANK YOU IN advance

Hello.

You calculate the equivalent resistance. R1iR2 connected in parallel and the resultant 1 / 2R. R3iR4 in series - resultant 2R.
Then the parallel connection of R / 2i2Rto gives Rz = 2R / 5.
I = U / Rz.

you calculate the rest.

Kisses

I would like to ask for a detailed answer for the skin, thank you in advance

Hello.


Ojjjjjjjjjjjjjjjjjj.

you calculate the equivalent resistance of the entire circuit.

1 / Rz = 1 / R1 + 1 / R2 + 1 / (R3 + R4) the latter term in the denominator has a series connection of R3 and R4.

Equivalent resistance of series connection of n resistors

Rzs = R1 + R2 + R3 + R4 + .... Rn

Equivalent resistance of a parallel connection of n resistors

1 / Rz = 1 / R1 + 1 / R2 + 1 / R3 + 1 / R4 + ....... 1 / Rn

Now the school rule: to add fractions, they must be brought to a common denominator.

the fact that R1 = R2 = R3 = R4 simplifies things

1 / Rz = 1 / R + 1 / R + 1 / 2R

1 / Rz = 2 / 2R + 2 / 2R + 1 / 2R

1 / Rz = 5 / 2R

Rz = 2R / 5

Rz = 2/5 times R.

I = U / R for R you substitute computed Rz

I = U / Rz
I = U / 2R / 5
I = 5U / 2R

I = 5 times 3V divided by 2 times 3 Ohm
I = 2.5A

I think everything is clear now.

I have only one request : Pick up the books and study a bit .

This is not an insult, but good advice. It pays off in the future.


Kisses : turn-l:

I understand something of this, but not quite, thanks for your help, maybe something will come out of it, I will tell you honestly I am already calculating this task from Saturday, I am not missing something, I probably counted 10 times and I do not know, so I would ask for the whole solution for which I thank in advance

Hello

Here is perhaps the easiest solution :)

As you can see, resistors R1 and R2 are connected in parallel and resistors R3 and R4 are connected in series.
First you need to calculate the equivalent resistances. For parallel connection of two resistors it is assumed
formula (R1 * R2): (R1 + R2)

Calculation 1
All resistances are 3 ohms

so: (3 * 3): (3 + 3) = 9: 6 = 9/6 = 3/2 - the result is a fraction
The equivalent resistance of R1 and R2 is 3/2 Ohm
R1.2 = 3/2 Ohm

Calculation 2
Resistors R3 and R4 are connected in series so their resistances add up

R3 + R4 = 3 + 3 = 6 Ohm
The equivalent resistance of the resistors R3 and R4 is 6Ohm
R3.4 = 6 ohms

After these treatments, we get a schcamt from the top of the picture.

Now we should sum up the calculated equivalent resistances R1.2 and R3.4. These resistances are connected
in parallel.

So the equivalent resistance R1,2,3,4 is equal to = (R1,2 * R3,4): (R1,2 + R3,4) = (3/2 * 6): (3/2 + 6) =
= 18/2: (3/2 + 18/2) = 9: 21/2 = 9 * 2/21 = 18/21 Ohm

R 1, 2, 3, 4 = 18/21 ohm

The current according to Ohm's law is equal to the supply voltage through the resistance
I = U: R = 3V: 18/21 Ohm = 3V * 21/18 = 63/18 = 3.5 A

And it's probably over.
In case of any errors, please improve (I am still learning myself -> IB Technical School of Electronics in Stalowa Wola

Hey !!

... and this job (mail) generally I can see that guys magician128 and Mariusz Ch. They have already given you a clear solution and if you do not understand it, it is difficult with you, I do not know if it is because of laziness you cannot solve tasks like this, because it is probably not the first one on the forum, or for some other reasons ... I am sending http link : //www.elektroda.pl/rtvforum/viewtopic.php? p = 1042365 & highlight = # 1042365 with a similar task (see my post), in which it is probably explained how to solve this type of task, because there is no point in rewriting it and repeating the above-mentioned colleagues. Compare and Solve for yourself is more fun than ready-made.

Greetings !!

PLEASE CLOSE THIS FAST AS EVERYTHING IS KNOWN