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

Question

asked Nov 26, 2021 9.8k views

1 Answer

Gaurang Tandon · Answer 1 · 2021-12-03T02:57:20+0000

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