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 …
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 …
How much voltage/current is "dangerous"? - Electrical Engineering …
Likewise, if the current and voltage are below a certain level, a person can--given enough time--safely absorb an arbitrarily large amount of electrical energy. Further, if voltage is sufficiently …
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 …
Different voltage sources in parallel - Electrical Engineering Stack ...
Apr 11, 2019 · I realize connecting two different voltage sources in parallel is a contradiction (in an ideal circuit). But if I were to connect this in practice and measure the voltage across points A …
Why does voltage drop across resistance contradict Ohm's law?
Aug 10, 2020 · Here when current flows in this circuit, due to ohm's some voltage has to be dropped across the internal resistance r, causing the output voltage, i.e, the voltage available …
Why does a capacitor create a 90 degree phase shift of voltage …
May 27, 2015 · The voltage source has a value of 5V with a phase angle of zero, and the capacitor's impedance is 5Ω. So the current is obviously 1A with a phase angle of 90°.
Voltage drop across a single resistor and across two resistors
Jul 20, 2020 · An intuitive way to look at is that all the voltage is dropped across two resistors, and since the resistors are the same, the voltage drop across each will be the same, each taking half.
voltage - Can someone explain these battery charge discharge …
Feb 13, 2023 · Notice how when the battery voltage reaches 2.45 V per cell, the charge current reduces and enters the constant voltage phase of charging (sometimes called the "topping …
How to reduce DC voltage using resistors?
Jul 10, 2013 · How would one go about using a 12 V DC power source to power something which needs 4.5 V DC using resistors? Is there a way to determine how much adding a resistor …