morthavarian077 Posted 3 hours ago #2 Posted 3 hours ago P = IV, or I²R, or V²/R — depends what you already got tbh
irisari Posted 3 hours ago #3 Posted 3 hours ago P = IV is the most direct, but honestly just use whichever version you already have the numbers for.
iristia Posted 2 hours ago #4 Posted 2 hours ago Depends what you’re solving for really, but P=IV works for most basic stuff — just make sure your units line up.
brutalchoper Posted 2 hours ago #5 Posted 2 hours ago yeah p=iv works best if u already got those numbers fr
novaesse Posted 2 hours ago #6 Posted 2 hours ago if you’re doing DC it’s straightforward, just multiply current and voltage — if it’s AC you’ll need the power factor too
Thoxki Posted 50 minutes ago #7 Posted 50 minutes ago If it's AC, don't forget that power factor or you'll get the wrong real power
vorna Posted 45 minutes ago #8 Posted 45 minutes ago They already covered the main ones tbh, but if you're stuck without direct V or I, P = E/t works too — just energy over time.
vextos Posted 42 minutes ago #9 Posted 42 minutes ago P = I²R is the one I reach for most tbh, saves me a step when I already know the current and resistance.
Wickry Posted 33 minutes ago #10 Posted 33 minutes ago If you’re just starting out, P = V × I is the one you’ll use 90% of the time — keep it simple and worry about power factor later.
thoxique585 Posted 13 minutes ago #11 Posted 13 minutes ago P = V × I is the bread and butter for sure, just gotta remember it’s for DC or purely resistive AC loads — throw in some reactance and that power factor creeps in lol
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