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School Physics Quiz : Work & Energy


Answer the following questions based on work & energy.

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Multiple choice

Your Performance  

1.

When a current is supplied by a battery, _______ energy is converted to electrical energy.

  mechanical

  chemical

  nuclear

  Half-n-half Clue
 

2.

'Energy can neither be created nor destroyed' is a statement of the

  Law of Conservation of Electric Charges

  Law of Conservation of Energy

  Law of Conservation of Matter

  Half-n-half Clue
 

3.

By definition, work is done when a _______ moves through a distance.

  force

  pressure

  mass

  Half-n-half Clue
 

4.

Power is the rate of doing work.

  True

  False

 

5.

A mass of 4 kg is raised through a vertical distance of 30 m. If the gravitational acceleration is 9.8 m s-2, then the potential energy gained by the mass is

  294 J

  1176 J

  39.2 J

  120 J

  Half-n-half Clue
 

6.

If an engine does 335 J of work in 5 seconds, its average power is

  1675 W

  330 W

  67 W

  340 W

  Half-n-half Clue
 

7.

The energy acquired by a body because of its motion is called potential energy.

  True

  False

 


 
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