- #1
sameeralord
- 662
- 3
Hello everyone,
First of all I have to say I never understood what voltage is? So this is my final hurrah at understanding this I'm hoping to understand this using pressure analogy.
Pin= 120 mmHg -----res1-------res2---Pout= 0mmHg
This is the circuit. Now let's think water is flowing. Now I want to know when water passes through the resistor 1 and resitor 2 why is the flow rate the same. I mean if res 1 slows down water, then res 2 should slow it down further.Why is it constant?
The way I have come up with an answer is like this, please tell me if this is right. Water has 2 energies = Hydrostaic pressure energy + kinetic energy pressure.
So each time the resistor only loses the hydrostatic energy of the water so flow remains constant. Now I don't know how to transfer this analogy to electrons, is it the same thing, does electrons also have 2 energies like this.
Also one last question. Why does a pressure gradient make something flow, is it simply that 120 mmHg pressure side in this case has more collisions, and molecules simply move due to these collisions? I know voltage is electrical potential difference between 2 points, but why exactly does this make electrons move? Do they move due to the collision like water or due to opposite charges attracting the electrons?
Thanks
First of all I have to say I never understood what voltage is? So this is my final hurrah at understanding this I'm hoping to understand this using pressure analogy.
Pin= 120 mmHg -----res1-------res2---Pout= 0mmHg
This is the circuit. Now let's think water is flowing. Now I want to know when water passes through the resistor 1 and resitor 2 why is the flow rate the same. I mean if res 1 slows down water, then res 2 should slow it down further.Why is it constant?
The way I have come up with an answer is like this, please tell me if this is right. Water has 2 energies = Hydrostaic pressure energy + kinetic energy pressure.
So each time the resistor only loses the hydrostatic energy of the water so flow remains constant. Now I don't know how to transfer this analogy to electrons, is it the same thing, does electrons also have 2 energies like this.
Also one last question. Why does a pressure gradient make something flow, is it simply that 120 mmHg pressure side in this case has more collisions, and molecules simply move due to these collisions? I know voltage is electrical potential difference between 2 points, but why exactly does this make electrons move? Do they move due to the collision like water or due to opposite charges attracting the electrons?
Thanks