Answers

  • Brainly User
2016-04-21T19:17:34+05:30
3 bulbs of 40 w runned for 6 hours uses =3*40*6=720watt=0.72kw
0
2016-04-21T19:23:08+05:30
Energy = number of bulbs * power consumed by each bulb * time.
= 3*40*10^{3} *6.
= 0.72 kWh

the same value in joules
E= 0.72* 3.6*10^{6} .
= 2592*10^{3}     J.

where 3.6*10^{6} joules is = 1kWh which is called as commercial unit of energy.



hope this helps. pls mrk as brainliest.............



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