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- How are current and voltage related to torque and speed of a brushless . . .
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") which is equal to the voltage it receives from battery (disregarding power losses and frictions for simplicity)
- How much voltage current is dangerous?
6 It's not the voltage but the current that kills, is a popular yet still incorrect incomplete answer It is the ENERGY that kills With static electricity you will will be exposed to voltages much, much, much higher than 110 230V and that is not dangerous So obviously high voltages are not that dangerous in some cases Why?
- Different voltage sources in parallel - Electrical Engineering Stack . . .
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 and B, what
- current - How to measure battery voltage during charging? - Electrical . . .
No If the meter probes are placed across the battery, you will measure the sum of the battery voltage and the voltage across the internal equivalent series resistance (ESR) $$ V_ {meas}=V_ {bat}+V_ {ESR} $$ How do we get the exact battery state during charging to show the battery percentage in case it has some display of battery percentage
- What, exactly, is voltage? - Electrical Engineering Stack Exchange
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 a water pipe
- Does LED brightness change with voltage?
The voltage only needs to be slightly above the forward voltage rating of the LED A common way to control brightness is through pulse width modulation (PWM) Instead of giving a LED less voltage, to dim it, you give it the full voltage, but in repeating bursts The duty cycle determines brightness
- What is forward and reverse voltage when working with diodes?
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 higher than the forward voltage As with forward voltage, a current will flow if the connected voltage exceeds this value This is called a "breakdown"
- Power = Voltage x Current - Electrical Engineering Stack Exchange
Voltage is actually the difference between electrical potentials A good analogy is a waterfall Current is the amount of water per unit time Voltage is the height of the waterfall (difference between gravitational potentials) Water hits with more power if the waterfall's height is increased
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