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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.

  nuclear

  chemical

  mechanical

  Half-n-half Clue
 

2.

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

  force

  mass

  pressure

  Half-n-half Clue
 

3.

_______ is the capacity to do work.

  Pressure

  Energy

  Force

  Half-n-half Clue
 

4.

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

  True

  False

 

5.

A machine that produces 60 J of work by using 80 J of energy has an efficiency of

  20 J

  25 %

  75 %

  15 J

  Half-n-half Clue
 

6.

Kinetic energy of a body in motion equals the product of half its mass and the square of its _______

  velocity

  distance

  acceleration

  Half-n-half Clue
 

7.

Efficiency of a machine equals

  Work Output / Work Input × 100 %

  Work Input / Work Output × 100 %

  Work Output / (Work Input + Work Output) × 100 %

  Work Input / (Work Input + Work Output) × 100 %

  Half-n-half Clue
 


 
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