Power consumption: 2.5±0.25w Explain this to me

At any given moment the actual power consumption is somewhere between 2 and 3 W, with 95% certainty.

>>58867573
It consistently draws 2.25-2.75 watts of power basically all of the time.
It's a 500mA phone charger, isn't it.

>>58867615
It's a fan that my roommate claims to use a majority of the electricity bill because I have it on 24/7. I was trying to calculate how much it costs to run but I had no idea what that meant.

>>58867573
P=IV

If current or voltage fluctuate at all, power will fluctuate. Welcome to high school.

>>58867614
It is designed to run with 100% certainty between 2.25-2.75W

>>58867645
Let's overestimate here:

(3W * 24h/day * 31days/month) * kWh/1000Wh * $0.15/kWh = $0.335/month

WORST CASE you're spending under 40 cents per month in that fan. Your roommate is a retard.

You're looking at something that would draw about 24 kWh (kilowatt hours) per year in the worst case if it were running 24/7.
Depending on your power bill, your roommate is a moron.

((2.75W x (24 x 7 x 52)h) / 1000) * 0.25$(assumed local price of 1kWh) = total price of power consumption for the mentioned fan.

Cirrca 6$ total. I assume your kWh price is actually lower but what the fuck do I know about murrica.

>>58867751
I meant total yearly price ...

Things may change if the device is broken, but that's rarely the case.

coo bee over 200 watts

>>58867573
A middle schooler could explain this.

>>58867816
OP is beet though

>>58867751
>murrica
Australia actually

>>58867645
Tell him to turn off the heater, that thing probably costs $20/month at least.

>>58867645
That's a small fan

>>58867573
you could power that fan with 4 AA batteries.

You can buy plugs that measure the power consumption.