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One kilowatt-hour is equal to :...

One kilowatt-hour is equal to :

A

3.6 x `10^6` watt-sec

B

6 x ` 10^5` watt-sec

C

60 x ` 10^5` watt-sec

D

none of these

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The correct Answer is:
A
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LAKHMIR SINGH & MANJIT KAUR-WORK AND ENERGY-Exercise
  1. A bullet of mass 15 g has a speed of 400 m/s. What is its kinetic ener...

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  2. COMMERCIAL UNIT OF ENERGY

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  3. One kilowatt-hour is equal to :

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  4. Name two units of power bigger than watt.

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  5. Define the term 'watt'.

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  6. One horse power is equal to

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  7. Name the physical quantity whose unit is watt.

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  8. What is the power of a body which is doing work at the rate of one jou...

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  9. A body does 1200 joules of work in 2 minutes. Calculate its power.

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  10. How many joules are there in one kilowatt-hour?

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  11. Name the quantity whose unit is : (a) kilowatt (b) kilowatt-hour

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  12. What is the common name of '1 kWh' of electrical energy?

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  13. A cell converts one form of energy into another form. Name the two for...

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  14. Name the device which converts electrical energy into mechanical energ...

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  15. Name the devices or machines which convert : (a) Mechanical energy i...

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  16. Name the devices or machines which convert : (i) Electrical energy i...

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  17. Fill in the following blanks with suitable words : (a) Power is the ...

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  18. A trolley is pushed along a road with a force of 400 N through a dista...

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  19. What kind of energy transformations take place at a hydroelectric powe...

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  20. What kind of energy transformations take place at a coal-based thermal...

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