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 …
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 …
How much voltage/current is "dangerous"?
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 …
Difference between Working Voltage and Isolation Voltage?
Feb 12, 2022 · The isolation voltage is just the rated maximum between two galvanic systems that are supposed to remain isolated. Just think of it as insulation, like what surrounds an insulated …
Understanding Voltage and Current Phase Difference
May 10, 2025 · But the capacitor defines the voltage over resistor in an RC series circuit, because the capacitor voltage changes based on the charge it stores, and how the voltage changes …
voltage - What is the difference between Vrms and Vm? - Electrical ...
I am relatively new here and I am confused as to the difference between Vrms and Vm. I would be obliged if someone can explain. (This in relation to 3-phase circuits would be even better) My …
RMS value calculation of 3 phase line voltages for power calculations
Apr 27, 2021 · You can use either but you have to remember that the phase to phase voltage is times the phase to neutral voltage. The term just comes from the trigonometric relationship …
Why does a resistor reduce voltage if V=IR? [duplicate]
You should read this the other way. Voltage varies directly with current. "R" is the constant of proportionality telling how much it varies. If I add in a resistor to a circuit, the voltage …
Reducing voltage with resistors - Electrical Engineering Stack …
Sep 2, 2014 · As others have mentioned you can use a voltage divider of two resistors, but the voltage divider output will change if the load current changes. You can still use a voltage …