Timeline for Why is current in a circuit constant if there is a constant electric field?
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| Feb 16, 2021 at 0:13 | comment | added | mche1962 | I think I see my mistake with thinking that resistance is equal to work per time. Would it be correct to say: how much a resistor of constant resistance pushes on a charge carrier(CC) (via collisions) is proportional to the CC's drift speed (which is proportional to current); thus, with a constant electric field (proportional to voltage) pushing the CC, the drift speed will increase until the resistor pushes the CC equally, which results in a constant drift speed of the CC - the resistance of a resistor is the constant of proportionality between drift speed and how much the resistor pushes? | |
| Feb 15, 2021 at 13:14 | comment | added | Bob D | @mche1962 No problem. I only now saw your comments (it came 2:30 AM my time). I have updated my answer to respond. | |
| Feb 15, 2021 at 13:13 | history | edited | Bob D | CC BY-SA 4.0 |
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| Feb 15, 2021 at 7:51 | comment | added | Peter - Reinstate Monica | @mche1962 Work per charge (e.g., per electron) is only a function of the potential difference. Interestingly, this results in the overall power turned into heat (energy/time in Watt) of a resistor to increase with the square of the voltage drop (with perfect wires all the voltage from the battery drops at the resistor). The reason is that each single charge loses proportionally more energy, but since they flow proportionally faster there are also proportionally more charges/time, leading to a combined increase. | |
| Feb 15, 2021 at 6:14 | comment | added | mche1962 | Also, when you said "the potential difference, or voltage, between the terminals of a resistor is equal to the work required, per unit charge...to move the charge between the terminals of the resistor" - to clarify - if this work per charge is a combination of both resistance and current, and current is charge per time, does this mean resistance is work per time? (I was trying to edit my first question comment and add this, but I ran out of time, sorry for the separation) | |
| Feb 15, 2021 at 5:58 | comment | added | Bob D | A load is anything connected to the battery that allows the charge to move from one battery terminal to the oo | |
| Feb 15, 2021 at 5:48 | comment | added | mche1962 | Thanks for the answer! When you say there is no flow of charges when there is no load, what do you mean by load - is anything with resistance, like a wire, a load? Does a load just mean charge can flow through it? | |
| Feb 15, 2021 at 3:25 | history | answered | Bob D | CC BY-SA 4.0 |