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  1. What exactly is voltage? - Electrical Engineering Stack Exchange

    The total voltage you get from one out and back, even with a high temperature difference is pretty small. By putting many of these out and back combinations together, you can get a useful voltage. A single …

  2. What, exactly, is voltage? - Electrical Engineering Stack Exchange

    Aug 22, 2020 · And also if voltage is like gravitational potential energy, how does more voltage mean more current? And here our nice analogy breaks down. In this sense voltage is more like pressure in …

  3. Why does the voltage drop across a given resistor change when I add ...

    Why exactly does the voltage drop in R1 change when I add another resistor to the circuit? I understand that it has to change according to Ohm's Law (V = IR), but how does the amount of charge moving

  4. Why does power supply have a negative rail if can only output positive ...

    Jun 4, 2024 · According to the datasheet of this power supply, the output voltage goes from 0~60 VDC. If the output can't be negative, why does it have a negative rail beside ground?

  5. inductive - DC motor voltage kickback when turning off - Electrical ...

    Mar 4, 2024 · The reason the voltage across the motor dies away slowly is because in the absence of current driven through it, it becomes a generator. That is, the spinning rotor has momentum, and …

  6. power - RMS voltage/current vs Average voltage/current - Electrical ...

    Jan 27, 2026 · (1) the emitter resistor is a linear device so any voltage across it is time proportional to the current through it. This means that there is complete harmonic compatibility between voltage and …

  7. How to allow smaller clearance between two specific high-voltage nets?

    Dec 27, 2025 · Because there is never a voltage difference between them, I would like the clearance between these two specific nets to be only 0.2 mm, while still keeping 0.6 mm clearance between …

  8. Voltage of Incandescent Christmas Mini Bulbs [closed]

    Dec 18, 2023 · The simplest solution is to wire an incandescent lamp in series with your lights. The smaller the wattage, the higher the resistance and the more voltage drop you'll get. The problem is …

  9. How are current and voltage related to torque and speed of a …

    Sep 3, 2012 · Voltage instead "regulates" how fast a motor can run: the maximum speed a motor can reach is the speed at which the motor generates a voltage (named "Counter-electromotive force") …

  10. What is "forward" and "reverse" voltage when working with diodes?

    Mar 3, 2011 · The reverse voltage is the voltage drop across the diode if the voltage at the cathode is more positive than the voltage at the anode (if you connect + to the cathode). This is usually much …