What is the total electrical energy consumed by using an electric cooker rated 1000W for 5 hrs?
Question 1 Report
What is the total electrical energy consumed by using an electric cooker rated 1000W for 5 hrs?
Answer Details
To find the total electrical energy consumed by the electric cooker, we need to use the formula:
Electrical Energy = Power x Time
where Power is given in watts and Time is given in hours.
In this case, the power rating of the electric cooker is 1000W and the time for which it is used is 5 hours. Therefore,
Electrical Energy = 1000W x 5 hours = 5000 watt-hours
However, we usually express electrical energy in joules. To convert watt-hours to joules, we need to multiply by 3600 (the number of seconds in an hour) and by the electrical energy conversion factor (1 watt = 1 joule per second). Therefore,
Electrical Energy = 5000 watt-hours x 3600 seconds/hour x 1 joule/second
= 18,000,000 joules = 1.8 x 10^7 joules
Therefore, the answer is: 1.8 x 10^7 J
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