Static Electricity

Practice Test
      
  1.Materials through which electrical charges will not move easily are called __________.  
  a.   insulators  
  b.   ions  
  c.   conductors  
  d.   grounders  
  Hint    
      
  2.A negative charge of -4.5×10-3 C and a positive charge of 6.5×10-3 C are separated by 0.50 m. What is the magnitude of the force between the two charges?  
  a.   2.6 × 105 N  
  b.   2.2 × 106 N  
  c.   1.1 × 106 N  
  d.   2.9 × 10-5 N  
  Hint    
      
  3.Charging by induction occurs when __________.  
  a.   electric charge causes the leaves of an electroscope to spread apart  
  b.   charge separation is used to charge an object without touching it  
  c.   a negatively-charged rod is touched to the knob of an electroscope  
  d.   a neutral body is charged by touching it with a charged body  
  Hint    
      
  4.Materials that allow charges to move about easily are called __________.  
  a.   facilitators  
  b.   insulators  
  c.   conductors  
  d.   plastics  
  Hint    

 
   
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