For how many hours can a 100 W bulb be sued to have one unit of electrical energy consumption ?

How many hours should a 200 W bulb glow to consume 2 units of electrical energy?

How many hours must a 200 W bulb glow to con-sume 1 unit electrical energy.

In a house two 60W electric bulbs are lighted for 4 hours, and three 100 W bulbs for 5 hours everyday. Calculate the electric energy consumed in 30 days.

Two electric bulbs of 100 W each is used for 10 hours in the month of June. Write the following steps in sequential order to find the numbe of units of electricity consumed in the month of June. (A) The number of units of electricity consumed by both bulbs in the month of June is the total elec-trical energy consumed by bulbs expressed in W h divided by 100 W h . (B) Note the rated power of each electric bulb, time of electrical consumption of each bulb per day from the given data. (C ) We know, one electrical unit = 1 kW h or 1000 W h . (D) Calculate the amount of electrical energy con-sumed by both the bulbs in the month of June using, (sum of the electrical power of both the bulb) xx (time of consumption in one day) xx 30 days.

Five bulbs, each rated at 40 W-220 V are used for 5 hours daily on 20 V line. How may units of electric energy is consumed in a month of 30 days?

Two 60W bulbs are used for 4hours everyday and five 100W bulbs are used for 5 hours everyday. How many units of electricity will be consumed in 30 days?