A lamp consumes 1000 J of electrical energy in 10 s. What is its power? If this lamp is used for 8 hours daily then calculate total energy consumed for the month of April.
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Answer : 86400000J
Explanation:
Power = Work/Time
Work done= Energy consumed by the lamp = 1000 J
Time = 10 s
Power= 1000/10= 100 Js-1=100 W per hour
for 8 hrs = 100*8*3600 = 2880000 J
total energy consumed in April is 2880000*30
=86400000 J
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