Question

hey there look at this plzz calculate the energy in J when an incandescent lamp of power 100W works for 10 s. If this bulb works for 4 hrs a day calculate the amount of energy consumed for 30 days.

Answer 1

Heya!
Here's Your Answer
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Power=100W
Time=10s
As The Formula states
Power=Energy/Time
P=W/T
P=Work/10
100=W/10
1000J= Work Done!

Now, Power is ?
Energy is 1000
Time Is 4hr*30
Time=120hrs
Power is =W/T
1000/120
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Hope This Helps......!!!!!!
:-)

Answer 2

  P =WD/T
WD=100*10
       =1000J
1000J=10 sec
1 sec =1000/10=100J
30 Days=100*3600*4*30
              =43200000J