How many hours does a 40 Watt lamp use one degree of electricity?

twenty-five

How long does a 36 volt 40 watt bulb last?

1 kwh = 1000 W · H
1000 W · H / 40 W = 25 H
ok

How long does a 40 Watt lamp last

The 40 Watt lamp is 25 hours per kilowatt hour, 1000W is 1 degree per hour, 100W is 1 degree per hour, 40W is 25 hours divided by 1000 divided by 40

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