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Longest Chain Rule

A 50

Question

A 50% efficienct boiler boils 150 liters pf water in 30 mins. Its power rating is 9600W. How much energy is consumed when 150 liters of water is boiled.

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Solution

Dear Student
$P o w e r = \frac{E n e r g y}{t i m e} e f f i c i e n c y = 50 % P o w e r o u t p u t = 0.5 \times 9600 = 4800 W a t t E n e r g y = P o w e r o u t p u t \times t i m e = 4800 \times 30 \times 60 = 8640000 J R E G A R D S$

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