Science Home Product Information Site Map Search Contact Us   Glencoe Online
Quizzes Quiz
 
Chapter 23: Series and Parallel Circuits

Practice Test
      
  1.How does a ground-fault interrupter work?  
  a.   It detects small differences in current caused by an extra current path and opens the circuit.  
  b.   It detects small differences in voltage caused by an extra voltage path and opens the circuit.  
  c.   It detects small differences in temperatures and opens the circuit.  
  d.   It detects small differences in resistance and opens the circuit.  
  Hint    
      
  2.What happens when an electric switch is turned off?  
  a.   The circuit becomes a series circuit.  
  b.   A circuit breaker turns off.  
  c.   The circuit is broken.  
  d.   There is a short circuit.  
  Hint    
      
  3.Current is measured by a(n) __________.  
  a.   ohmmeter  
  b.   electrometer  
  c.   ammeter  
  d.   voltmeter  
  Hint    
      
  4.Electrical wiring in homes uses __________ circuits.  
  a.   series  
  b.   voltage  
  c.   overloaded  
  d.   parallel  
  Hint    
      
  5.Voltmeters must have __________.  
  a.   very high voltage  
  b.   very high resistance  
  c.   very high currents  
  d.   very low resistance  
  Hint    
      
  6.A 340- resistor and a 550- reisistor are connected in parallel. This group is then connected in series with a 180- and a 120- resistor. What is the equivalent resistance of the circuit?  
  a.   210  
  b.   550  
  c.   510  
  d.   420  
  Hint    
      
  7.A 1.5 V battery is attached to a 1.0- resistor and a 2.0- resistor in series. What is the current?  
  a.   2.0 A  
  b.   0.50 A  
  c.   4.5 A  
  d.   3.0 A  
  Hint    
      
  8.What is the equation to find current in a series of three resistors?  
  a.   I = V(R1 × R2 × R3)  
  b.   I = V(R1 + R2 + R3)  
  c.   I = V/(R1 + R2 + R3)  
  d.   I = V/(R1 × R2 × R3)  
  Hint    
      
  9.In the river model for an electric circuit, the amount of water flowing through the river each second is the __________.  
  a.   voltage  
  b.   current  
  c.   path  
  d.   power  
  Hint    
      
  10.The __________ is the sum of all resistances in a series.  
  a.   equivalent resistance  
  b.   resistance total  
  c.   calculated resistance  
  d.   resistance  
  Hint    

 
   
McGraw-Hill / Glencoe
The McGraw-Hill Companies