Question

F. Solve the following numerical problems.
1. A fan of 60 W runs for 75 hours in a month. How much electrical energy is consumed?
2. An electric kettle rated at 2.2 kW works for 4 hours a day. Calculate the number of units consumed
by it in 20 days.
3. A heater is rated at 5 kW. Calculate the cost of energy consumed by it in 30 days if it is run for
2 hours daily. The cost of 1 kWh is priced at 4.20.
4. Five LED bulbs of 8 W each, two fans of 40 W each, an electric motor of 3 kW, and a geyser of 5
kW are used for 8 hours per day by a family. Calculate the total energy consumed in 30 days and
the cost of electricity used in one day at the rate of 5 per unit.​

Answer 1

Answer:

An electric bulb of 60 W is used for 6 hrs/day . Calculate the units of energy consumed in one day by the bulb.