Answer :
Final answer:
The total power consumed by the electric breaker, the iron and the 9 lamps when in operation is 1562 Watts.
Explanation:
Total Power Consumption
Power consumption of a device in watts (W) is the rate at which it converts electrical energy to other forms of energy. In this case, let's calculate the total power consumed by the electric breaker, the iron, and the lamps. The power consumed by the electric breaker is 1200W, by the iron is 2W, and by the 9 lamps, each consuming 40W, is 9*40W=360W.
So, the total power consumed by these devices is 1200W (electric breaker) + 2W (iron) + 360W (9 lamps) which equals to 1562W. Therefore, these household devices together will consume a total of 1562 Watts when operating simultaneously.
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