How to calculate voltage drop over and power loss in wires
How do I calculate the voltage drop over wires given a supply voltage and a current? How do I anticipate on voltage drop so that the final load has the correct supply voltage? What will be …
voltage - Is power proportional to V or V^2? - Electrical …
Jan 20, 2021 · Yes, because I is a function of V, as long as we're talking about resistors. Power is linearly proportional to voltage, though, if you're talking about a constant current device.
power - Why can I use P = I²R but not P=V²/R when calculating …
Power lost in the wires is 60² * 0.01 = 36 watts so energy delivered is this number multiplied by time (2 seconds) = 72 joules. Why can I use P = I²R but not P=V²/R when calculating energy …
mains - When can I use the formula P=V^2/R? - Electrical …
Jun 18, 2016 · The voltage in that formula must be the one across the load or subject of which you are interested to calculate the power, and the R is the resistance of that subject.
power - S = VI*/2 derivation - Electrical Engineering Stack Exchange
I was wondering Where I could find the derivation for the complex power formula, S=VI*/2, where S, V and I are complex phasors. I've seen a whole bunch of verifications where people sub …
Power consumed by a CPU - Electrical Engineering Stack Exchange
The main power draw in CPU's is caused by the charging and discharging of capacitors during calculations. These electrical charges are dissipated in resistors, turning the associated …
power - Hydropower formula: - Electrical Engineering Stack …
May 1, 2016 · The basic formula for power is just like P = V.I except it is: - Power = pressure (pascals) x flow rate (cubic metres per second) To calculate flow rate needed to deliver 10 kW, …
power - Calculating total voltage/current for 3-phase? - Electrical ...
Phase 3 (V): 245.9375V I will like to know what is the total current generated, as well as the voltage value. Additionally, I want to find the power too. What I am thinking is that the 3-phase …
How to calculate the power dissipation in a transistor?
Electrical power is the product of voltage and current: $$ P = VI $$ Usually we are converting electrical energy into heat, and we care about power because we don't want to melt our …
RMS value calculation of 3 phase line voltages for power calculations
Apr 27, 2021 · For any three-phase load, the total power is sum of the power consumed per phase. For a balanced load, this simplifies to: In a wye connected load, line current equals …