Question

b. An electric bulb of 120 W is used for 8
hrs. per day. Calculate the units of energy
consumed in one day by the bulb​

Answer 1

Explanation:

an electric bulb is used 8 hrs/day

so time = 8hrs

energy consumed by an bulb is = p x t

= 120 W x 8 Hrs

= 960 w/hrs

1KWh = 960 /1000 kwh

= 0.96 kwh

1 unit = 1 kwh = 0.96 unit

so the energy consumed by an electric bulb in one day is 0.96 units