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How many hours can two 220 V, 40 W lamps work with one degree of electricity? How many hours can two "220 V, 40 W" lamps work with one degree of electricity? I can't get the formula right now
One kilowatt per hour
So 40 Watt lamp can use 1000 / 40 = 25 hours
One degree electricity can supply 220 V, 25 W bulb to work normally for () H (physics power of junior three)
A kilowatt hour is a kilowatt hour for a kilowatt consumer
Then 25 watts of electrical appliances to use a kilowatt hour of electricity, you need to use 40 hours
A light bulb L1 marked with 220 V and 100 W is required to: (1) how long can the light bulb work for 1 degree of electricity? (2) the power of the light bulb
For a bulb L1 marked with 220 V and 100 W, how long can the bulb work for 1 degree of electricity? (2) what is the resistance of the bulb? (3) if L1 and bulb L2 marked with 22 V and 40 W are connected in series to a 220 V circuit, the actual power consumed by L1 can be calculated
How many hours can four "220 V 40 W & quot; bulbs and two" 220 V 60 W "bulbs shine normally at the same time
The total power of all the light bulbs here is 160 + 120 = 380W, so the power of one kilowatt per hour is about 25 hours
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