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Unit-9 Electricity.pptx

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This document discusses how to calculate electric power consumption in a home. It explains that total power consumption is calculated by multiplying the power of each appliance by the number of that appliance and the time it runs. An example calculation is provided to demonstrate how to determine the total monthly cost based on these factors and the cost per unit of electricity. Key points are that meters measure consumption in kilowatt-hours, and to calculate total usage one needs the power, number, and run time of each appliance in the home.

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Electric Power Consumption Unit-9 Electricity
Overview To calculate total power consumption of a home, we need to know the power of the each electrical equipment, the number of equipment and time they run. This note explains about the electric power consumption in our house.
Electric Power Consumption The total electric energy consumed by an individual (especially houses) measured in kilowatt-hour is called electric power consumption. All the power companies install a meter in their customer's house so that they can charge according to the electric consumption. Those installed meters measure electricity on kilowatt-hour (Kwh). In normal terms, we say 1 unit for 1 Kwh. It is actually the amount of power used for a certain period of time. For the easy purpose, we say an electrical appliance of 1000 W consuming power for one hour will consume 1Kwh i.e. 1Kwh = 1Kw × 1hr.
ðð¨ð°ðžð« ð‚ð¨ð§ð¬ð®ð¦ð©ð­ð¢ð¨ð§ = ðð¨ð°ðžð« ð‚ð¨ð§ð¬ð®ð¦ðžð ð›ð² ð€ð©ð©ð¥ð¢ðšð§ðœðž × ðð¨. ð¨ðŸ ð€ð©ð©ð¥ð¢ðšð§ðœðžð¬ × ð“ð¢ð¦ðž ð¨ðŸ ðŽð©ðžð«ðšð­ð¢ð¨ð§ ðð¨ð°ðžð« ð‚ð¨ð§ð¬ð®ð¦ð©ð­ð¢ð¨ð§ = ð(ð¢ð§ ðŠð°) × ð × ð“(ð¢ð§ ð¡ð¨ð®ð«) ð€ð¦ð¨ð®ð§ð­ ð­ð¨ ððšð² ð¨ð« ð“ð¨ð­ðšð¥ ð‚ð¨ð¬ð­ ð‚ = ðð¨ð°ðžð« ð‚ð¨ð§ð¬ð®ð¦ð©ð­ð¢ð¨ð§ × ðð«ð¢ðœðž ððžð« ð”ð§ð¢ð­
Unit-9 Electricity.pptx
Unit-9 Electricity.pptx
So, to calculate total power consumption of a home, we need to know the power of the each equipment, number of equipment and time they run. Since all the appliances are not run at the same time and same period of time it is better to calculate power consumed by each appliance and add all at last.
Example: If a home has 10 tube lights of 30W that run for 4 hours daily, 5 television of 200W running for 3 hours daily, 2 irons 1000W 1 hour weekly. Calculate total amount to be paid if the cost per unit is Rs. 7. Solution: Here, ð‘·ð’ð’˜ð’†ð’“ ð’ð’‡ ð‘»ð’–ð’ƒð’† ð’ð’Šð’ˆð’‰ð’• ð‘·ðŸ = ðŸ‘🎠𑾠= ðŸ‘🎠ðŸðŸŽðŸŽðŸŽ ð‘²ð’˜ = ðŸŽ. ðŸŽðŸ‘ ð‘²ð’˜ ð‘µð’. ð’ð’‡ ð‘»ð’–ð’ƒð’† ð’ð’Šð’ˆð’‰ð’•ð’” ð‘µðŸ = ðŸðŸŽ ð‘»ð’Šð’Žð’† ð‘»ðŸ = 💠ð‘¯ð’ð’–ð’“ð’” ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’ð’‡ ð‘»ð’–ð’ƒð’† ð’ð’Šð’ˆð’‰ð’•ð’” (ð‘¬ðŸ) = ð‘·ðŸ × ð‘µðŸ × ð‘»ðŸ = ðŸŽ. ðŸŽðŸ‘ × ðŸðŸŽ × 💠∴ ð‘¬ðŸ= ðŸ. ðŸ ð‘²ð’˜ð’‰
Now, ð‘·ð’ð’˜ð’†ð’“ ð’ð’‡ ð‘»ð’†ð’ð’†ð’—ð’Šð’”ð’Šð’ð’ ð‘·ðŸ = ðŸðŸŽðŸŽ 𑾠= ðŸðŸŽðŸŽ ðŸðŸŽðŸŽðŸŽ ð‘²ð’˜ = ðŸŽ. ðŸ ð‘²ð’˜ ð‘µð’. ð’ð’‡ ð‘»ð’†ð’ð’†ð’—ð’Šð’”ð’Šð’ð’ð’” ð‘µðŸ = 📠ð‘»ð’Šð’Žð’† ð‘»ðŸ = 👠ð‘¯ð’ð’–ð’“ð’” ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’ð’‡ ð‘»ð’†ð’ð’†ð’—ð’Šð’”ð’Šð’ð’ð’” (ð‘¬ðŸ) = ð‘·ðŸ × ð‘µðŸ × ð‘»ðŸ ð‘¶ð’“, ð‘¬ðŸ = ðŸŽ. ðŸ × 📠× 👠∴ ð‘¬ðŸ= 👠ð‘²ð’˜ð’‰
Similarly; ð‘·ð’ð’˜ð’†ð’“ ð’ð’‡ ð‘°ð’“ð’ð’ ð‘·ðŸ‘ = ðŸðŸŽðŸŽðŸŽ 𑾠= ðŸðŸŽðŸŽðŸŽ ðŸðŸŽðŸŽðŸŽ ð‘²ð’˜ = ðŸ ð‘²ð’˜ ð‘µð’. ð’ð’‡ ð‘°ð’“ð’ð’ð’” ð‘µðŸ‘ = ðŸ ð‘»ð’Šð’Žð’† ð‘»ðŸ‘ = ðŸ ð‘¯ð’ð’–ð’“ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’ð’‡ ð‘°ð’“ð’ð’ð’” ð‘¬ðŸ‘ = ð‘·ðŸ‘ × ð‘µðŸ‘ × ð‘»ðŸ‘ ð‘¶ð’“, ð‘¬ðŸ‘ = ðŸ × ðŸ × ðŸ ∴ ð‘¬ðŸ‘= ðŸ ð‘²ð’˜ð’‰ ð‘»ð’ð’•ð’‚ð’ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’†ð’… ð’ƒð’š ð’‚ð’ð’ ð‘¨ð’‘ð’‘ð’ð’Šð’‚ð’ð’„ð’†ð’”(ð‘¬) = ð‘¬ðŸ + ð‘¬ðŸ + ð‘¬ðŸ‘ ð‘¶ð’“, 𑬠= ðŸ. ðŸ + 👠+ ðŸ ð‘²ð’˜ð’‰ ∴ 𑬠= ðŸ”. 📠Kwh
ð‘»ð’ð’•ð’‚ð’ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’Šð’ ð’ð’ð’† ð’Žð’ð’ð’•ð’‰ = 𑬠× ðŸ‘🎠ð’…ð’‚ð’šð’” ð‘»ð’ð’•ð’‚ð’ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’Šð’ ð’ð’ð’† ð’Žð’ð’ð’•ð’‰ = ðŸ”. 📠× ðŸ‘🎠ð‘»ð’ð’•ð’‚ð’ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’Šð’ ð’ð’ð’† ð’Žð’ð’ð’•ð’‰ = ðŸðŸ—📠ð’–ð’ð’Šð’•ð’” ð‘»ð’ð’•ð’‚ð’ ð’‚ð’Žð’ð’–ð’ð’• ð’•ð’ ð’ƒð’† ð’‘ð’‚ð’Šð’… (ð‘ª) = ð‘»ð’ð’•ð’‚ð’ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ × ð‘·ð’“ð’Šð’„ð’† ð‘·ð’†ð’“ ð‘¼ð’ð’Šð’• ð‘»ð’ð’•ð’‚ð’ ð’‚ð’Žð’ð’–ð’ð’• ð’•ð’ ð’ƒð’† ð’‘ð’‚ð’Šð’… (ð‘ª) = ðŸðŸ—📠× 🕠ð‘»ð’ð’•ð’‚ð’ ð’‚ð’Žð’ð’–ð’ð’• ð’•ð’ ð’ƒð’† ð’‘ð’‚ð’Šð’… 𑪠= ð‘¹ð’”. ðŸ, ðŸ‘ðŸ”📠Therefore, the total cost to be paid is one thousand three hundred and sixty-five rupees.
Overview To calculate total power consumption of a home, we need to know the power of the each equipment, the number of equipment and time they run. This note explains about the electric power consumption in our house. Things to remember • Power Consumption = Power consumed by appliance × Number of appliances × ð“ð¢ð¦ðž ð¨ðŸ ðŽð©ðžð«ðšð­ð¢ð¨ð§ • To calculate total power consumption of a home, we need to know the power of the each equipment, the number of equipment and time they run. • Meters measure electricity on kilowatt-hour (Kwh).
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Unit-9 Electricity.pptx

  • 2. Overview To calculate total power consumption of a home, we need to know the power of the each electrical equipment, the number of equipment and time they run. This note explains about the electric power consumption in our house.
  • 3. Electric Power Consumption The total electric energy consumed by an individual (especially houses) measured in kilowatt-hour is called electric power consumption. All the power companies install a meter in their customer's house so that they can charge according to the electric consumption. Those installed meters measure electricity on kilowatt-hour (Kwh). In normal terms, we say 1 unit for 1 Kwh. It is actually the amount of power used for a certain period of time. For the easy purpose, we say an electrical appliance of 1000 W consuming power for one hour will consume 1Kwh i.e. 1Kwh = 1Kw × 1hr.
  • 4. ðð¨ð°ðžð« ð‚ð¨ð§ð¬ð®ð¦ð©ð­ð¢ð¨ð§ = ðð¨ð°ðžð« ð‚ð¨ð§ð¬ð®ð¦ðžð ð›ð² ð€ð©ð©ð¥ð¢ðšð§ðœðž × ðð¨. ð¨ðŸ ð€ð©ð©ð¥ð¢ðšð§ðœðžð¬ × ð“ð¢ð¦ðž ð¨ðŸ ðŽð©ðžð«ðšð­ð¢ð¨ð§ ðð¨ð°ðžð« ð‚ð¨ð§ð¬ð®ð¦ð©ð­ð¢ð¨ð§ = ð(ð¢ð§ ðŠð°) × ð × ð“(ð¢ð§ ð¡ð¨ð®ð«) ð€ð¦ð¨ð®ð§ð­ ð­ð¨ ððšð² ð¨ð« ð“ð¨ð­ðšð¥ ð‚ð¨ð¬ð­ ð‚ = ðð¨ð°ðžð« ð‚ð¨ð§ð¬ð®ð¦ð©ð­ð¢ð¨ð§ × ðð«ð¢ðœðž ððžð« ð”ð§ð¢ð­
  • 7. So, to calculate total power consumption of a home, we need to know the power of the each equipment, number of equipment and time they run. Since all the appliances are not run at the same time and same period of time it is better to calculate power consumed by each appliance and add all at last.
  • 8. Example: If a home has 10 tube lights of 30W that run for 4 hours daily, 5 television of 200W running for 3 hours daily, 2 irons 1000W 1 hour weekly. Calculate total amount to be paid if the cost per unit is Rs. 7. Solution: Here, ð‘·ð’ð’˜ð’†ð’“ ð’ð’‡ ð‘»ð’–ð’ƒð’† ð’ð’Šð’ˆð’‰ð’• ð‘·ðŸ = ðŸ‘🎠𑾠= ðŸ‘🎠ðŸðŸŽðŸŽðŸŽ ð‘²ð’˜ = ðŸŽ. ðŸŽðŸ‘ ð‘²ð’˜ ð‘µð’. ð’ð’‡ ð‘»ð’–ð’ƒð’† ð’ð’Šð’ˆð’‰ð’•ð’” ð‘µðŸ = ðŸðŸŽ ð‘»ð’Šð’Žð’† ð‘»ðŸ = 💠ð‘¯ð’ð’–ð’“ð’” ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’ð’‡ ð‘»ð’–ð’ƒð’† ð’ð’Šð’ˆð’‰ð’•ð’” (ð‘¬ðŸ) = ð‘·ðŸ × ð‘µðŸ × ð‘»ðŸ = ðŸŽ. ðŸŽðŸ‘ × ðŸðŸŽ × 💠∴ ð‘¬ðŸ= ðŸ. ðŸ ð‘²ð’˜ð’‰
  • 9. Now, ð‘·ð’ð’˜ð’†ð’“ ð’ð’‡ ð‘»ð’†ð’ð’†ð’—ð’Šð’”ð’Šð’ð’ ð‘·ðŸ = ðŸðŸŽðŸŽ 𑾠= ðŸðŸŽðŸŽ ðŸðŸŽðŸŽðŸŽ ð‘²ð’˜ = ðŸŽ. ðŸ ð‘²ð’˜ ð‘µð’. ð’ð’‡ ð‘»ð’†ð’ð’†ð’—ð’Šð’”ð’Šð’ð’ð’” ð‘µðŸ = 📠ð‘»ð’Šð’Žð’† ð‘»ðŸ = 👠ð‘¯ð’ð’–ð’“ð’” ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’ð’‡ ð‘»ð’†ð’ð’†ð’—ð’Šð’”ð’Šð’ð’ð’” (ð‘¬ðŸ) = ð‘·ðŸ × ð‘µðŸ × ð‘»ðŸ ð‘¶ð’“, ð‘¬ðŸ = ðŸŽ. ðŸ × 📠× 👠∴ ð‘¬ðŸ= 👠ð‘²ð’˜ð’‰
  • 10. Similarly; ð‘·ð’ð’˜ð’†ð’“ ð’ð’‡ ð‘°ð’“ð’ð’ ð‘·ðŸ‘ = ðŸðŸŽðŸŽðŸŽ 𑾠= ðŸðŸŽðŸŽðŸŽ ðŸðŸŽðŸŽðŸŽ ð‘²ð’˜ = ðŸ ð‘²ð’˜ ð‘µð’. ð’ð’‡ ð‘°ð’“ð’ð’ð’” ð‘µðŸ‘ = ðŸ ð‘»ð’Šð’Žð’† ð‘»ðŸ‘ = ðŸ ð‘¯ð’ð’–ð’“ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’ð’‡ ð‘°ð’“ð’ð’ð’” ð‘¬ðŸ‘ = ð‘·ðŸ‘ × ð‘µðŸ‘ × ð‘»ðŸ‘ ð‘¶ð’“, ð‘¬ðŸ‘ = ðŸ × ðŸ × ðŸ ∴ ð‘¬ðŸ‘= ðŸ ð‘²ð’˜ð’‰ ð‘»ð’ð’•ð’‚ð’ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’†ð’… ð’ƒð’š ð’‚ð’ð’ ð‘¨ð’‘ð’‘ð’ð’Šð’‚ð’ð’„ð’†ð’”(ð‘¬) = ð‘¬ðŸ + ð‘¬ðŸ + ð‘¬ðŸ‘ ð‘¶ð’“, 𑬠= ðŸ. ðŸ + 👠+ ðŸ ð‘²ð’˜ð’‰ ∴ 𑬠= ðŸ”. 📠Kwh
  • 11. ð‘»ð’ð’•ð’‚ð’ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’Šð’ ð’ð’ð’† ð’Žð’ð’ð’•ð’‰ = 𑬠× ðŸ‘🎠ð’…ð’‚ð’šð’” ð‘»ð’ð’•ð’‚ð’ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’Šð’ ð’ð’ð’† ð’Žð’ð’ð’•ð’‰ = ðŸ”. 📠× ðŸ‘🎠ð‘»ð’ð’•ð’‚ð’ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ ð’Šð’ ð’ð’ð’† ð’Žð’ð’ð’•ð’‰ = ðŸðŸ—📠ð’–ð’ð’Šð’•ð’” ð‘»ð’ð’•ð’‚ð’ ð’‚ð’Žð’ð’–ð’ð’• ð’•ð’ ð’ƒð’† ð’‘ð’‚ð’Šð’… (ð‘ª) = ð‘»ð’ð’•ð’‚ð’ ð‘·ð’ð’˜ð’†ð’“ ð‘ªð’ð’ð’”ð’–ð’Žð’‘ð’•ð’Šð’ð’ × ð‘·ð’“ð’Šð’„ð’† ð‘·ð’†ð’“ ð‘¼ð’ð’Šð’• ð‘»ð’ð’•ð’‚ð’ ð’‚ð’Žð’ð’–ð’ð’• ð’•ð’ ð’ƒð’† ð’‘ð’‚ð’Šð’… (ð‘ª) = ðŸðŸ—📠× 🕠ð‘»ð’ð’•ð’‚ð’ ð’‚ð’Žð’ð’–ð’ð’• ð’•ð’ ð’ƒð’† ð’‘ð’‚ð’Šð’… 𑪠= ð‘¹ð’”. ðŸ, ðŸ‘ðŸ”📠Therefore, the total cost to be paid is one thousand three hundred and sixty-five rupees.
  • 12. Overview To calculate total power consumption of a home, we need to know the power of the each equipment, the number of equipment and time they run. This note explains about the electric power consumption in our house. Things to remember • Power Consumption = Power consumed by appliance × Number of appliances × ð“ð¢ð¦ðž ð¨ðŸ ðŽð©ðžð«ðšð­ð¢ð¨ð§ • To calculate total power consumption of a home, we need to know the power of the each equipment, the number of equipment and time they run. • Meters measure electricity on kilowatt-hour (Kwh).