Science Home Product Information Site Map Search Contact Us   Glencoe Online
Quizzes Quiz
 
Chapter 21: Electric Fields

Practice Test
      
  1.A positive test charge of 9.0 × 10-5 C is in an electric field that exerts a force of 3.7 × 10-5 N on it. What is the magnitude of the electric field at the location of the test charge?  
  a.   0.41 N/C  
  b.   0.24 N/C  
  c.   2.4 N/C  
  d.   4.1 N/C  
  Hint    
      
  2.A negative charge of 1.5 × 10-7 C experiences a force of 0.030 N to the right in an electric field. What is the magnitude and direction of the field?  
  a.   2.0 × 105 N/C directed to the left  
  b.   4.5 X10-9 N/C directed to the left  
  c.   2.0 × 105 N/C directed to the right  
  d.   4.5 × 10-7 N/C directed to the right  
  Hint    
      
  3.If 200 J of work are performed to move one coulomb of charge from a positive plate to a negative plate, what potential difference exists between the plates?  
  a.   200 V  
  b.   1.6 × 10-19 V  
  c.   2.0 × 103 V  
  d.   5.0 × 10-3 V  
  Hint    
      
  4.According to Coulomb's law, the force on a test charge is __________ the test charge.  
  a.   equal to  
  b.   greater than  
  c.   proportional to  
  d.   less than  
  Hint    
      
  5.The SI derived unit of potential difference is the __________.  
  a.   coulomb  
  b.   ohm  
  c.   volt  
  d.   joule  
  Hint    
      
  6.An electric field is about 150 N/C downward. What is the direction of the force on a positively-charged particle?  
  a.   upward  
  b.   changes rapidly  
  c.   stationary  
  d.   downward  
  Hint    
      
  7.What work is done when 3.5 C is moved through an electric potential difference of 4.5 V?  
  a.   7.8 × 10-1 J  
  b.   1.6 × 101 J  
  c.   1.6 × 101 J/C  
  d.   negative 1.6 × 101 J  
  Hint    
      
  8.A 35-ΜF capacitor has an electric potential difference of 50.0 V across it. What is the charge on the capacitor?  
  a.   1.75 C  
  b.   1.8 × 10-3 C  
  c.   1.4 × 10-6 C  
  d.   1.8 × 103 C  
  Hint    
      
  9.Electric potential difference is measured in __________.  
  a.   newtons per coulomb  
  b.   coulombs per joule  
  c.   volts per coulomb  
  d.   joules per coulomb  
  Hint    
      
  10.An electric field is to be measured using a positive test charge of 3.0 × 10-5C. This test charge experiences a force of 0.50 N acting at an angle of 15 degrees. What is the magnitude of the electric field at the location of the test charge?  
  a.   1.7 × 104 N/C  
  b.   1.7 × 103 N/C  
  c.   0.49 N/C  
  d.   6.0 × 10-5 N/C  
  Hint    

 
   
McGraw-Hill / Glencoe
The McGraw-Hill Companies