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How much energy, in kJ does a 75 watt light bulb use when it is on for 25 minutes
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How much energy, in kJ does a 75 watt light bulb use when it is on for 25 minutes

User Sebastian Annies
by
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1 Answer

5 votes

Answer:

112.5 KJ

Step-by-step explanation:

Energy = Power x Time

Time = 25 minutes

= 25 x 60 sec = 1500 sec

Power = 75 watt

Energy = 75 x 1500

112,500 Joules

Energy in KJ = 112,500/1000

= 112.5 KJ

User Gaurang Tandon
by
4.8k points
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