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प्रश्न
An electric heater uses 600 kJ of electrical energy in 5 minutes. Calculate its power rating.
उत्तर
Electrical energy used:
(E) = 600 kJ
= 600000 J
Time taken:
(t) = 5(60) s
= 300 s
Now, we can calculate the power of the body as:
Power = `600000/300` W
= 2000 W
So, the power of electric heater is 2000 W.
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