3. Pradeep use a 1200-watt water heater for 10 minutes each day.
month)
b. How many hours does he use the water heater in a month?
c. What is the power of the water heater in kilowatts?
2. How many mimuies does he use the water heater in a month? (Assume there are 30 days in the
d. How many kilowatt-hours of electricity does the water heater use in a month?
Answers
please kindly write questions clearly
Given - Power of water heater - 1200 Watt
Time - 10 minutes each day for a month.
Find - How many hours does he use the water heater in a month?
What is the power of the water heater in kilowatts?
How many mimuies does he use the water heater in a month? (Assume there are 30 days in the
How many kilowatt-hours of electricity does the water heater use in a month?
Solution - Taking a month of 30 days for solving.
Each day he used it for 10 minutes a day.
10 minutes = 0.17 hour.
In a month of 30 days, he used water heater for - 0.17*30 = 5.1 hour.
Power of water heater in kilowatts = 1200/1000
Power in kilowatts = 1.2 kW.
In a month of 30 days, he used water heater for 30*10 minutes.
Hence, he used it for 300 minutes.
Electricity usage in a month - 1.2*5.1
Electricity usage - 6.12 kWh.