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[-] Zerush@lemmy.ml 24 points 7 hours ago
[-] umbrella@lemmy.ml 12 points 7 hours ago

the water channel analogy works surprisingly well for more than just the basic explanations before falling apart, even how it propagates through the circuit sort of like waves.

[-] programmer_belch@lemmy.dbzer0.com 5 points 6 hours ago

You can somewhat explain transistors with water gates and sinks too

[-] expatriado@lemmy.world 108 points 10 hours ago
[-] joelfromaus@aussie.zone 14 points 7 hours ago

Sudden urge to become an electrician…

[-] rants_unnecessarily@piefed.social 21 points 8 hours ago* (last edited 8 hours ago)

Step sister, watt are you doing!?

[-] lvxferre@mander.xyz 9 points 8 hours ago

Red has dohminatrix vibes.

[-] Trex202@lemmy.world 21 points 7 hours ago

She's part of the Resistance

[-] JasonDJ@lemmy.zip 7 points 10 hours ago

Eli goddangit I told you to PUSH.

[-] BallShapedMan@lemmy.world 42 points 11 hours ago
[-] Triumph@fedia.io 21 points 11 hours ago

Joule have to ask again later.

[-] Bhaelfur@lemmy.world 17 points 9 hours ago
[-] WanderingThoughts@europe.pub 12 points 8 hours ago
[-] P1k1e@lemmy.world 9 points 8 hours ago

I don't have the Capacity for all this

[-] socsa@piefed.social 3 points 7 hours ago

Um ackshually it's charge which is being moved

[-] Washedupcynic@lemmy.ca 7 points 9 hours ago
[-] Ziglin@lemmy.world 2 points 6 hours ago
[-] YoiksAndAway@piefed.zip 3 points 8 hours ago

Well, of the three I'd say Ohm is the one laying down the law.

[-] Washedupcynic@lemmy.ca 3 points 7 hours ago
[-] Chainweasel@lemmy.world 2 points 10 hours ago

Amperage is like a rope, you can draw it but you can't push it

[-] mexicancartel@lemmy.dbzer0.com 7 points 10 hours ago

You absolutely can push amperage. You just have to increase volts

[-] FatherPeanut@pawb.social 1 points 9 hours ago* (last edited 9 hours ago)

This has always messed with me to explain, but mostly since this confusion is based on different experiences. If you learn the theory and understand how to craft your own circuitry, pushing and pulling amps can be designed for, but if all you've ever done is install things like a contractor would, then all you're familiar with is pulling amps.

It always makes it such a hard explanation when someone says, "I thought you pulled amps." There really ain't an easy explanation, since most people are only familiar with systems designed to not be used outside their target voltage, so they don't experience Ohm's Law in action.

In retrospect, its probably because I only have these talks with contractors lel, and they've spent a whole lotta time going with the "Pulls amps" approach, and it works out well enough for them. Whatever works for the groups you're communicating among, I suppose.

[-] mexicancartel@lemmy.dbzer0.com 2 points 7 hours ago

True, but as someone doing physics, I'll say both is fine. You can push amps by increasing voltage, and also pull amps by varying resistance. After all, ohms law basically is the balancing of theese three.

And if i'm gonna go too far pushing amps is the most sensible thing. The thing we call pulling amps is just decreasing the resistance against the push(voltage) so that pushing becomes more effective. And also what I just called push is also a pull, at negative terminal.

[-] ByteJunk@lemmy.world 2 points 9 hours ago

I'm lost. How do you "push amps"? Technically it's just Ohm's law, and "pulling" or "pushing" are only colloquial terms, but in regular usage, a device "pulls" or "draws" a specific current.

The definition of voltage kinda supports this, because voltage isn't something that exists at a single point, like pressure - you can measure pressure in a single point of a fluid, for example, but not so with voltage: it's the difference in potential between two different points.

I'm trying to think of something like a taser gun, where you're kinda trying to "push amps" through some body, but even then there's two barbs that need to hit, if one of them fails you don't get the jolt (as far as I understand it, please correct me if I'm wrong), so if anything you're "pulling" the current across with voltage.

[-] mexicancartel@lemmy.dbzer0.com 1 points 7 hours ago

If you think of water pressure from a tank to a tap as a "push" then potential difference is also making such a push. Well yeah ambiguity from colloquial terms exist here, but it is not between push and pull. The two points making potential difference, "pushes" amps through the wire connected in between them. You can say that is not a push but like a chain being rotated. The volts is doing the rotating aka pushing+pulling of the chains. But saying a device pulling amps is essentially that devuce becoming less resistive to the push done by volts

[-] WagnasT@piefed.world 1 points 8 hours ago

If a device consuming power is pulling amps, then consider a device generating power is pushing amps.

[-] marcos@lemmy.world 1 points 8 hours ago* (last edited 8 hours ago)

You can push electrons into a capacitor if you don't connect the other side. A few of them, but more than zero.

There are electrostatic generators that work by pushing electrons on one side and pulling from the other of some insulator that moves between those two. But you can't sustain a steady state of only one of those actions.

[-] InputZero@lemmy.world 1 points 8 hours ago* (last edited 8 hours ago)

You get it. Pushing AMPs is just a voltage significantly higher than the voltage required to jump a gap, or short a circuit, ect. Depending on your application. I like to think of it as a water slide, the source is the high end, the circuit is the slid, and the sink is the bottom of the slide and pushing AMPs is attaching a comic book villan's version of a pump big enough to drain all the water from the ocean.

[-] mexicancartel@lemmy.dbzer0.com 2 points 7 hours ago

Nahh the "significantly higher voltage" comes only because your device having some form of protection preventing too much current flow. The most simple device would be a resistor and any change in voltage leads to a change in current. So yes you are pusing amps by changing voltage. Pulling amps is by changing resistance so that volt can push amps easier

[-] Bunitonito@lemmy.world 1 points 7 hours ago

I always think of amperage as a cat trying to use its jawline to prise open a cracked door. The door is ohms and the volts is the cat's energy levels at that point. Wide open door you just hear the cat's claws frantically scraping a thud when it slides into the wall

[-] ShinkanTrain@lemmy.ml 1 points 8 hours ago* (last edited 8 hours ago)
this post was submitted on 11 Mar 2026
486 points (100.0% liked)

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