Question

An electric bulb of 100W work for 4 hour a day. Calculate the unit of energy consumed in 15 days

Answer 1

Hey !!
Energy consumed = power × time
Here power of bulb = 100W and
t = 4×15 = 60hours

Now just plug in the values
We get E = 100×60
=> 6000Watt Hours

Answer 2

Power of bulb = 100 W

Energy consumed per day = 100 x 4 = 400 W-h

Energy consumed in 15 days = 400 x 15 = 6000 W-h

or 6 Kwh or 6 units.

Hope This Helps You!