A microwave oven has a power rating of 850 W. If the microwave is turned on for 6 minutes, how much energy will it use?

Before we jump into it, I just want to point out that a microwave oven has*** two***
power ratings. One is the amount of electrical power it takes from the wall outlet to do its job. The other is the "cooking power" it delivers into the chamber in the form of microwave radiation to heat the meatloaf. The utility power required from the wall outlet is always more than the cooking power radiated into the chamber.
But we didn't really need to go into all that in order to answer the question.
1 watt = 1 joule per second 1 minute = 60 seconds
(850 watts) x (1 (joule/sec) / watt) x (60sec/min) x (6 minutes) = 306,000 joules

Answered by AL2006 | 2024-06-10

The microwave oven uses 306,000 joules of energy when turned on for 6 minutes at a power rating of 850 W. We calculated this by converting the time to seconds and applying the energy formula. The energy consumption is directly related to the power and the duration of operation.
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Answered by AL2006 | 2024-09-27