Question

How much energy will four 100 watt bulbs connected in series approximately consume in 10 hours?

Answer 1

power=100 watt
bulb=4
for series the current is same throughout
time=10 hrs=10×60×60sec.
power=work(energy)/time
work (energy)=power×time
=100×10×60×60
=3.6×10^6 Joule