How Electricity Works - for visual learners
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Date: 2024-12-17
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Comments and reviews: 19
stevosteve
Theory: OHMS LAW is brilliant.
Practically: If a circuit (i. e. continuity) is broken then no electricity flows.
Reason: The source voltage supply (i. e. potential difference) must reach each side the target load (i. e. a resistive item such as a lamp, or motor or heater etc etc.
If the circuit (i. e. continuity) is broken, then you will always find the source voltage across the position of the break.
You can prove this using the simple circuit in this video. ..
Measure the source voltage
Close the switch contact
Then you will find the same source voltage across the load (bulb, motor etc etc)
NOW open the switch contact (i. e. introduce a 'fault, because that is all an open switch contact does)
Now measure across the open circuit switch contacts and you will find the source voltage.
If you measure across the load you will find zero voltage, that is why the lamp or motor etc is not working when the switch is open.
Same thing if it is a fault in the circuit. .. . the voltage missing across the load, can instead be found across the point of the fault. This simple theory really helps to trace electrical circuit faults in a practical manner.
reply
Theory: OHMS LAW is brilliant.
Practically: If a circuit (i. e. continuity) is broken then no electricity flows.
Reason: The source voltage supply (i. e. potential difference) must reach each side the target load (i. e. a resistive item such as a lamp, or motor or heater etc etc.
If the circuit (i. e. continuity) is broken, then you will always find the source voltage across the position of the break.
You can prove this using the simple circuit in this video. ..
Measure the source voltage
Close the switch contact
Then you will find the same source voltage across the load (bulb, motor etc etc)
NOW open the switch contact (i. e. introduce a 'fault, because that is all an open switch contact does)
Now measure across the open circuit switch contacts and you will find the source voltage.
If you measure across the load you will find zero voltage, that is why the lamp or motor etc is not working when the switch is open.
Same thing if it is a fault in the circuit. .. . the voltage missing across the load, can instead be found across the point of the fault. This simple theory really helps to trace electrical circuit faults in a practical manner.
reply
paulo1940
Very elaborate and succinct video with phenomenal animations to support it.
I might have fallen short of understanding the idea behind how surface charge plays a crucial rule, it is my first time learning about their relevance in circuit theory.
Also, I am quite perplexed by the reasoning behind why if 10V of charge which the battery provides are consumed by the lamp, that there is somehow a pushing force from the lamp's negative terminal to the battery's positive terminal that maintains the same magnitude of current.
I might have had same attention lapses though, so correct me if my questions are based on wrong interpretations of the content.
Otherwise, it was very seemless to understand the interplay between the battery, wires, resistive elements and most of how the electric field is the true factor to why the effects of electricity are lightning fast.
reply
Very elaborate and succinct video with phenomenal animations to support it.
I might have fallen short of understanding the idea behind how surface charge plays a crucial rule, it is my first time learning about their relevance in circuit theory.
Also, I am quite perplexed by the reasoning behind why if 10V of charge which the battery provides are consumed by the lamp, that there is somehow a pushing force from the lamp's negative terminal to the battery's positive terminal that maintains the same magnitude of current.
I might have had same attention lapses though, so correct me if my questions are based on wrong interpretations of the content.
Otherwise, it was very seemless to understand the interplay between the battery, wires, resistive elements and most of how the electric field is the true factor to why the effects of electricity are lightning fast.
reply
copernicofelinis
Nice to see a video that highlights the role of surface charge in circuit theory. For too many years it has been neglected in basic courses, to the point that ignorance of its role is a major cause of misunderstanding electrical phenomena.
I envy your ability to synthesize concepts in so short a video. It's taking me multiple half an hour videos just to introduce the concepts of voltage and potential difference.
reply
Nice to see a video that highlights the role of surface charge in circuit theory. For too many years it has been neglected in basic courses, to the point that ignorance of its role is a major cause of misunderstanding electrical phenomena.
I envy your ability to synthesize concepts in so short a video. It's taking me multiple half an hour videos just to introduce the concepts of voltage and potential difference.
reply
robertmatt7756
In 1966 while pursuing a BSA Radio Merit Badge at age 10, I became involved with the Military Auxiliary Radio System (MARS. All that to say: I had to learn all the Electrical Formulas by rote. Any young person today interested in Electrical Engineering will be well served by your excellent presentation. Thank you for not dumbing down the subject in any way.
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In 1966 while pursuing a BSA Radio Merit Badge at age 10, I became involved with the Military Auxiliary Radio System (MARS. All that to say: I had to learn all the Electrical Formulas by rote. Any young person today interested in Electrical Engineering will be well served by your excellent presentation. Thank you for not dumbing down the subject in any way.
reply
GrandePunto8V
Summary: EM fields/waves are travelling first when you flip the switch. They induce current in the wires, but it's only a power loss (some fraction of fields penetrates the wire - superconductor doesn't allow that. Energy is OUTSIDE the wires (very close, in the insulation.
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Summary: EM fields/waves are travelling first when you flip the switch. They induce current in the wires, but it's only a power loss (some fraction of fields penetrates the wire - superconductor doesn't allow that. Energy is OUTSIDE the wires (very close, in the insulation.
reply
haventyetbegun
Very refreshing (no pun intended) to hear someone attempt to actually explain electricity instead of just using the water-flowing-in-a-pipe analogy. I'm still not desperate to understand how it works, and watching this video a few more times should help a long way!
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Very refreshing (no pun intended) to hear someone attempt to actually explain electricity instead of just using the water-flowing-in-a-pipe analogy. I'm still not desperate to understand how it works, and watching this video a few more times should help a long way!
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omerkaya545
9: 40
For the love of god, please explain us, in this fasion, how having 2 or more batteries in series increases the voltage.
I drew all of this out on paper and it makes no sense to me still.
According to this, I should still expect the same voltage!
reply
9: 40
For the love of god, please explain us, in this fasion, how having 2 or more batteries in series increases the voltage.
I drew all of this out on paper and it makes no sense to me still.
According to this, I should still expect the same voltage!
reply
iCantThinkOfaName3
My way of visualizing it is like, a cross country loop, the volts are how many people are running, and the amps are how fast they are running, when you short circuit it, it is like a head on collision between like volts people at like amps mph
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My way of visualizing it is like, a cross country loop, the volts are how many people are running, and the amps are how fast they are running, when you short circuit it, it is like a head on collision between like volts people at like amps mph
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olem06ag21
theengineeringmindset
I can get 20% off on brilliant, but I can’t get 30 days for free. Been like this before too, but then I thought that it was because I watched the video a long time after it was published. Do you know what the problem may be
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theengineeringmindset
I can get 20% off on brilliant, but I can’t get 30 days for free. Been like this before too, but then I thought that it was because I watched the video a long time after it was published. Do you know what the problem may be
reply
luminousfractal420
noooooo. you have to show the handoff between the electrons charges. it wont make sense without it, people have too many ideas in their heads about how that might work. for visual learners that bit is helpful
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noooooo. you have to show the handoff between the electrons charges. it wont make sense without it, people have too many ideas in their heads about how that might work. for visual learners that bit is helpful
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davidegalilei
At 8: 21 the correct formula to calculate the Time to travel should be time=distance/speed, not time=speed/distance. The result is correct, but the operands are swapped. Great explanation though, thanks!
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At 8: 21 the correct formula to calculate the Time to travel should be time=distance/speed, not time=speed/distance. The result is correct, but the operands are swapped. Great explanation though, thanks!
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eastcoastwilly1373
So how did they see those electrons again to formulate the math formulas It's a metering system to charge money for something not understood. Hence the name, Electrical Theory.
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So how did they see those electrons again to formulate the math formulas It's a metering system to charge money for something not understood. Hence the name, Electrical Theory.
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poyenwu
Veritasium has a video explaining how electricity does NOT work like this, but instead works in a completely different way than how we think it does. How electricity actually works
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Veritasium has a video explaining how electricity does NOT work like this, but instead works in a completely different way than how we think it does. How electricity actually works
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PPhase
Some negative cables in my car just go to bare metal. how does this create a circuit and still work especially if electricity travels from the negative
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Some negative cables in my car just go to bare metal. how does this create a circuit and still work especially if electricity travels from the negative
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vitathefox9218
Amazing video, I always love your content! We've even had some of your early chiller videos played in my HVAC classes. Always a good watch
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Amazing video, I always love your content! We've even had some of your early chiller videos played in my HVAC classes. Always a good watch
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lockercoin3693
best video on the internet
fck shudve seen it in high school. i\I chose mechanical engineering instead and i graduated 5 years ago.
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best video on the internet
fck shudve seen it in high school. i\I chose mechanical engineering instead and i graduated 5 years ago.
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orionpax444
Nice video. Well done and explained I'm very understandable ways. I would love to see a video describing the third theory Hole theory.
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Nice video. Well done and explained I'm very understandable ways. I would love to see a video describing the third theory Hole theory.
reply
engineering_mindset
We follow along as we are taught, but I'm sure that the principles of electricity will change in the future as we learn more.
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We follow along as we are taught, but I'm sure that the principles of electricity will change in the future as we learn more.
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PPhase
Why does the voltage reduce along the length of the wire at the negative end if the electricity is flowing from that side of the battery
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Why does the voltage reduce along the length of the wire at the negative end if the electricity is flowing from that side of the battery
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