Calculate the electricity bill amount for a month of 30 days, if the following devices are used as specified: a.two bulbs of 40W for six hours. } b.two tubelights of 50W for eight hours Kwh pa day c.A TV of 120W for six hours. d. Give the rate of electricity is 2.50 rupees per unit? 3
Question
Calculate the electricity bill amount for a month of 30 days, if the following devices are used as specified: a.two bulbs of 40W for six hours. } b.two tubelights of 50W for eight hours Kwh pa day c.A TV of 120W for six hours. d. Give the rate of electricity is 2.50 rupees per unit? 3
Solution
Sure, let's calculate the electricity bill step by step:
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First, we need to calculate the total energy consumption for each device in kilowatt-hours (kWh), as electricity bills are typically calculated in this unit.
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Convert the wattage of each device to kilowatts by dividing by 1000:
- Bulbs: 40W = 0.04kW
- Tubelights: 50W = 0.05kW
- TV: 120W = 0.12kW
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Multiply the power (in kW) of each device by the number of hours it is used per day to get the energy consumed per day (in kWh):
- Bulbs: 0.04kW * 6 hours * 2 (since there are two bulbs) = 0.48kWh
- Tubelights: 0.05kW * 8 hours * 2 (since there are two tubelights) = 0.8kWh
- TV: 0.12kW * 6 hours = 0.72kWh
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Add up the daily energy consumption of all devices to get the total daily energy consumption:
- Total daily energy consumption = 0.48kWh (bulbs) + 0.8kWh (tubelights) + 0.72kWh (TV) = 2kWh
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Multiply the total daily energy consumption by the number of days in the month to get the total monthly energy consumption:
- Total monthly energy consumption = 2kWh/day * 30 days = 60kWh
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Finally, multiply the total monthly energy consumption by the rate of electricity to get the total electricity bill amount:
- Electricity bill amount = 60kWh * 2.50 rupees/kWh = 150 rupees
So, the electricity bill for the month would be 150 rupees.
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