Question

a 100 watt electric bulb is lighted for 3 hours daily and four 60 watt electric bulbs are lighted for 2 hours daily calculate the unit of energy consumed in a month of 30 days​

Answer 1

Answer: 12.6 kwh

Explanation:for bulb one =

100w ×3 h

=300w per day

For 30 day

= 300×30

= 9000w

Change in kwh=9000/1000

=9 kwh

For bulb 2

60w×2h=120w per day

For 30 day = 30 × 120= 3600

Change in kwh= 3600/1000

= 3.6kwh

Add both3.6+9 =12.6kwh

{We can say this 12.6 unit also }

Hope it helps