1.5kj of energy are used every second by a microwave oven, what is the power rating of the oven?
2 answers:
Power is the rate at which energy is consumed. When 1 J of energy is consumed in one second, the power consumed is 1 watt.
The microwave consumes 1.5 kJ of energy.
In joules, the energy consumed is 1500 J
Here, E is the energy consumed in time interval <em>t.</em>
The power rating of the microwave is therefore,
Thus, the power rating of the oven is 1500 W or 1.5 kW
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