Even though it's been 8 years, I found this useful for my DC Circuits class when we did a lab on Series Parallel Ladder circuits. No other video I saw was simple enough to understand until I found your video. Thank you!
Ik this was posted seven years ago but I was actually crying over my homework until I found this video bc I couldn’t find any other good example so thank u ❤
My friend you have a very good technique how to solve the total resistance without showing the formula I'm very impress please post more ,for 7 months reviewing I only learn for less than ten minutes
Do take look at this also. What is a resistor? How does current branch in a network of resistors? How does it "know" how much should flow in each branch? While some detail is given in science and engineering courses about conductors, insulators and semiconductors, resistance is described in several ways. Examples include i. The restriction to the flow of electrons. ii. The difficulty in moving electrical current through a conductor to which voltage is applied. iii. a circuit element which dissipates energy in the form of heat . More appropriate description for a resistor would be the property of a conductor which determines the current produced by a given difference of potential. This makes us remember that a resistor is a conductor first. And, there is reason to say that superconductive wires dont obey ohm's law. So all conductors are resistive, though not superconductors. Resistors are used in circuits to regulate the strengths of currents either by reducing the diameter of conductors or introducing more obstacles or lattice imperfections to reduce the strength of current. The current branches in a parallel network by an elaborate rearrangement of surface charge. For more details about resistance, how current branches in a parallel circuit and ohm's law consult the following videos, articles and books. What is current ? What is voltage ? A working definition for current in conductors like metal wires is "the start-stop motion of millions and millions of conduction band electrons everywhere within with a drift superimposed". In circuits, voltage is due to surface charges. Consider a simple circuit comprising a battery, two wires and a resistor. The e.m.f of the battery is due to separation of positive from negative charges which produces an e.m.f across its terminals and a pattern of electric field surrounding them, not exactly but like a dipole. An electric field is there in the wires and in the resistor; powerful electric field and uniform within the resistor, weak and uniform within the wires. The field is set up by a tiny amount of surface charge with a steep gradient on the resistor and not so steep a gradient on the wires. It is the electric field E created by the surface charges sourced from the battery, which produces a force causing the mobile electrons to acquire a drift velocity v = μE, where μ is the mobility which is a number representing the freedom of movement of the electron in the lattice. This results in a current density J = σE, where σ is the conductivity of the wire or material of resistor and E is the electric field in the wire if considering wire and is the field in the resistor when considering the resistor. The p.d. or voltage across the resistor is the integral of a constant powerful field along its length. The p.d. or voltage across the wires is the integral of a constant but weak field along its length. Voltage is entirely because of the surface charges. Electrostatics and circuits belong to one science and not two, that of electricity and magnetism. To know how they are unified visit this link matterandinteractions.org/articles-talks/ and view the article 'A unified treatment of electrostatics and circuits. B. Sherwood and R. Chabay, unpublished. (1999)' pdf. For more details see Electric and Magnetic Interactions by Chabay and Sherwood www.matterandinteractions.org or Fundamentals of electric theory and circuits by Sridhar Chitta www.wileyindia.com/fundamentals-of-electric-theory-and-circuits.html There is a "look inside" feature in the amazon.com webpage of the book "Fundamentals of electric theory and circuits" by Sridhar Chitta with a few pages of Chapter 1 which may be viewed and also which you may swipe left or press < icon to view the foreword, preface and Table of Contents. For a video lecture by Prof Ruth Chabay on surface charge in a simple dc circuit visit ua-cam.com/video/-7W294N_Hkk/v-deo.html There is a full set of lectures beginning lecture 13 here on surface charges, electric fields, simple circuits, capacitance, inductance, faraday's law, motional emf, magnetic forces and more topics here matterandinteractions.org/videos/EM.html For a live demonstration of surface charge in a circuit visit ua-cam.com/video/U7RLg-691eQ/v-deo.html There is a full set of lectures beginning lecture 13 here on surface charges, electric fields, simple circuits, capacitance, inductance, faraday's law, motional emf, magnetic forces and more topics here matterandinteractions.org/videos/EM.html
Anyone know how to find the amps of the second top resistor if you have a 12 volt battery? I'm doing a circuit where I found the ohms of all resistors but not sure how to break it down and build it up to get amps, volts
Why can't I just add the three on each box? It will be 105 ohms, 38 ohms, and 30 ohms. Therefore, they are all in parallel now. I could then solve for the RTotal which will be 14.46 ohms. Why is this process not applicable?
You have to think about the path the current (I) runs. It starts off going through the 25Ω, then it splits between the 8Ω and the 30Ω. The current becomes smaller at the 30Ω and 50Ω than it was at the 25Ω. Because of that "node" splitting the current you cannot add the 25 30, and 50Ω. Same idea goes for the next loop. You cannot add different resistors together when they have different currents. Thus in this equation you have to simplify the parallel resistors (which means simplifying the series at the far right).
Even though it's been 8 years, I found this useful for my DC Circuits class when we did a lab on Series Parallel Ladder circuits. No other video I saw was simple enough to understand until I found your video. Thank you!
One of the best......racked my brain doin these calculation....now i m hopeful for my tomorrows exam
Thanks for uploading this. It made dealing with these types of questions click.
Thank you so much! You made my life easier after 5 hours straight.
It really do be like that starting out
I have searched so many videos on UA-cam and I am from India
This was the first I which I understood! Thanks
Why do you make it seem so easy but then I listen to my Professor and I'm beating my head against the wall.
Schools a business. They want us to fail.
Howd you do anyway ?
@@KAVORKA.KIINGG Actually working on my finals right now but averaging an A.
@@mitchellarmyguy2515 hells yeah buddy!! Hopefully Im there in 2 months .
Becouz ur professor is the student of my professor...🤫
Ik this was posted seven years ago but I was actually crying over my homework until I found this video bc I couldn’t find any other good example so thank u ❤
Totally helped. At the 2min point i understood it completely
thank you so much ive been trying to find a video like this for ages!
Hi I m from india
u look gorgeous
Thanks for dumbing it down for me.
My friend you have a very good technique how to solve the total resistance without showing the formula I'm very impress please post more ,for 7 months reviewing I only learn for less than ten minutes
Thanks Boss! Very elegant! You must be from the real world where efficiency is rewarded. Much Thanks!
your the best now i can pass the test some teachers are totally selfish
Perfect!, Thank you for the upload
Sir, thank you very much for sharing knowledge..
Thanks a lot…didn’t even finish the video and I understood
Omg, thank you so much, this breakdown was life for me
I love your work sir
You explained it better than our professor
Wow......! It is more helpful for us to understand. Thank you 😊 keep going
can you please solve this using a loop method
u r the best ..no one can contest
Thanks man this was very easy to understand❤❤
You literally saved me from crying I was trying to figure out on my own and my book did not give a good explination.
This one is very easy 👍
Thanks for sharing...easy method to remember.
Very grateful for this video. Thank you!
This is dope had to subscribe
Woow thanks it was Lot of help to me🙇🙇🙇
Happy to have this!
awesome...................................................................
Thank you
This vedio are very nice, its also helping me on how to solve this equation.
Thank you university of UA-cam
You saved me
Thank you so much 😭😭
Thanks a lot..its very much helpful..
Finally got it Thank you soo much unc
Thanks so much for helping, keep going.
thank you so much you literally saved my butt
i like to learn all this , thank you
many many thanks u are so help me
So how do you solve if one or few resistors are unknown?
you simplified this for me. thank you.
Great instruction!
What do you do if you have a battery?
Thank you very much for this video!It was very helpful!
Very........ Good.......
you really made it easy for me thank you very much i subscribe your channel
Helped a lot thank u
Thanks this was a lot of help
What is the power delivered in 10 ohm resistance
Thanks you help me understand this
What about for 3 parallel circuits with different resistance value like 200, 400 , 100
learn this in 4 minutes tpc and my teacher has taken bout 2 months and all now
thanks,,this video did help,,,
How do you find the current in each branch?
thank you for uploading this video
Huge help man thanks
Ys useful ... explanation...
Thank you
so you started at the last resistors which are series.. is it the same method if the last resistors are parallels instead?
Hello i did like you video but had a similar homework to find current across 5 ohm resistor
Helpful Video, Thanks A lot!
Great job
Ooooo that's very cooool sir . I love you
Super, good job
Thank u chooooo much I asked so many members this question but I didn't got any were but I got here hey hey it's so useful😁😁
Do take look at this also.
What is a resistor? How does current branch in a network of resistors? How does it "know" how much should flow in each branch?
While some detail is given in science and engineering courses about conductors, insulators and semiconductors, resistance is described in several ways.
Examples include i. The restriction to the flow of electrons. ii. The difficulty in moving electrical current through a conductor to which voltage is applied.
iii. a circuit element which dissipates energy in the form of heat .
More appropriate description for a resistor would be the property of a conductor which determines the current produced by a given difference of potential.
This makes us remember that a resistor is a conductor first. And, there is reason to say that superconductive wires dont obey ohm's law. So all conductors are resistive, though not superconductors.
Resistors are used in circuits to regulate the strengths of currents either by reducing the diameter of conductors or introducing more obstacles or lattice imperfections to reduce the strength of current.
The current branches in a parallel network by an elaborate rearrangement of surface charge.
For more details about resistance, how current branches in a parallel circuit and ohm's law consult the following videos, articles and books.
What is current ? What is voltage ?
A working definition for current in conductors like metal wires is "the start-stop motion of millions and millions of conduction band electrons everywhere within with a drift superimposed".
In circuits, voltage is due to surface charges. Consider a simple circuit comprising a battery, two wires and a resistor.
The e.m.f of the battery is due to separation of positive from negative charges which produces an e.m.f across its terminals and a pattern of electric field surrounding them, not exactly but like a dipole.
An electric field is there in the wires and in the resistor; powerful electric field and uniform within the resistor, weak and uniform within the wires. The field is set up by a tiny amount of surface charge with a steep gradient on the resistor and not so steep a gradient on the wires.
It is the electric field E created by the surface charges sourced from the battery, which produces a force causing the mobile electrons to acquire a drift velocity v = μE, where μ is the mobility which is a number representing the freedom of movement of the electron in the lattice.
This results in a current density J = σE, where σ is the conductivity of the wire or material of resistor and E is the electric field in the wire if considering wire and is the field in the resistor when considering the resistor.
The p.d. or voltage across the resistor is the integral of a constant powerful field along its length. The p.d. or voltage across the wires is the integral of a constant but weak field along its length.
Voltage is entirely because of the surface charges.
Electrostatics and circuits belong to one science and not two, that of electricity and magnetism. To know how they are unified visit this link
matterandinteractions.org/articles-talks/ and view the article 'A unified treatment of electrostatics and circuits. B. Sherwood and R. Chabay, unpublished. (1999)'
pdf.
For more details see Electric and Magnetic Interactions by Chabay and Sherwood
www.matterandinteractions.org
or
Fundamentals of electric theory and circuits by Sridhar Chitta
www.wileyindia.com/fundamentals-of-electric-theory-and-circuits.html
There is a "look inside" feature in the amazon.com webpage of the book "Fundamentals of electric theory and circuits" by Sridhar Chitta with a few pages of Chapter 1 which may be viewed and also which you may swipe left or press < icon to view the foreword, preface and Table of Contents.
For a video lecture by Prof Ruth Chabay on surface charge in a simple dc circuit visit
ua-cam.com/video/-7W294N_Hkk/v-deo.html
There is a full set of lectures beginning lecture 13 here on surface charges, electric fields, simple circuits, capacitance, inductance, faraday's law, motional emf, magnetic forces and more topics here
matterandinteractions.org/videos/EM.html
For a live demonstration of surface charge in a circuit visit
ua-cam.com/video/U7RLg-691eQ/v-deo.html
There is a full set of lectures beginning lecture 13 here on surface charges, electric fields, simple circuits, capacitance, inductance, faraday's law, motional emf, magnetic forces and more topics here
matterandinteractions.org/videos/EM.html
Thank you so much I’m so fucking thankful to you for uploading this video
What is direction of current in the circuit?
How do you find the total voltage bro
And the total current
Well when the total resistance across a circuit gets zero when 3 resistances connected in series and those connected in parral with another resister
Thank you!
Anyone know how to find the amps of the second top resistor if you have a 12 volt battery? I'm doing a circuit where I found the ohms of all resistors but not sure how to break it down and build it up to get amps, volts
thank you so much
Wish we could see calculations for vd current ect.
Thanks man, now I know how to kill these sums
thanksssssssss
thanks for this i really need this thank you
If RT=90. What of voltage and current
Thanks for your good video
THANK YOU 😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭😭
Red dot 30 is parallel to 20 , 12 ohm, 8,12,10 in series 30, this 30 and the first box 30 are parallel gives 15 ohm , last 15 +25+50 =90 ohm ??
Don’t you reciprocate 20+30 in parallel?
He did
Well sir
Thank you 🙏 ❤️
I do want same circuit of finding current (I)
Man I really need to refresh this for an entrance exam for Samsung
Why can't I just add the three on each box? It will be 105 ohms, 38 ohms, and 30 ohms. Therefore, they are all in parallel now. I could then solve for the RTotal which will be 14.46 ohms. Why is this process not applicable?
You have to think about the path the current (I) runs. It starts off going through the 25Ω, then it splits between the 8Ω and the 30Ω. The current becomes smaller at the 30Ω and 50Ω than it was at the 25Ω. Because of that "node" splitting the current you cannot add the 25 30, and 50Ω.
Same idea goes for the next loop.
You cannot add different resistors together when they have different currents. Thus in this equation you have to simplify the parallel resistors (which means simplifying the series at the far right).
OMG THANKS
Thankyou sir
When we r adding 5+10+15 we r writing result 30 in parallel position (10ohms)why can't we writing it in series position it means in 5ohms position
Because current is deviding just after the 8k resistance
Thnx man🤗🤗🤗
Make a continuation of this video, getting the current of each
Hi I m from india
Thanks
🖒
Lol its not true haha insted of a+b/axb and try the 1/r1 + 1/r2 Hahaha
You helped me alot thanks
Thank you
Thanks