Question

19: A person uses 4 fluorescent
tube of 40 watt rating for 10 hrs
per day.how much electrical
energy is consumed in a month of
30 days​

Answer 1

Answer:

48000Watt-hours or 48KWh (killowatt-hour)

Step-by-step explanation:

4bulbs of 40 watt = 4×40=160 watts

1 bulb glows 10 hours a day,

so for 30 days = 30 days × 10 hours = 300 hours

total energy consumed in 30 days = 160 watts × 300 hours = 48000 watt-hours or 48 KWh

or

energy consumed for 1 bulb of 40 watt glows for 10 hours = 40×10 = 400 watt-hours

energy consumed for 1 bulb for 30 days = 400×30 = 12000 Wh or 12 KWh

energy consumed for 4 bulbs of 40 watts for 10 hours/day for 30 days = 12000 Wh × 4 = 48000 Wh or 48KWh