title: Electrical Circuits and Currents (Sci-Hi: Physical Science)
author:  Barbara A. Somervill 
description: From lightning strikes to heartbeats, we constantly interact with electricity. Electricity and Electrical Currents provides a solid introduction to this fascinating area of science. Beginning with a description of electricity as a form of energy, the book --NSTA<br /><br />This series is divided into two sets, Life Science and Physical Science. Each book is designed with colorful pages and large graphics and photographs in an easy-to-read format. Each chapter contains concise introductions emphasizing the specific content, --Library Media Connection
zlib_text: EXAMINATION QUESTIONS  ---     To be used with 
   
            Industrial Electronics For Engineers,  
                  Chemists, and Technicians 
     by Daniel J. Shanefield       Willam Andrew Publishing (2001) 
   
   
  1.(a)  In electronics, if the insulation on a wire carrying direct current has a black 
  color, is that wire usually carrying a positive or a negative voltage?        
   
   (b)  Imagine a 9 volt battery, driving a current through a coil of wire, with no 
  other significant resistance in the circuit.  Then that current is interrupted by a 
  switch that is opened suddenly.  Will the voltage that appears immediately across 
  the open switch contacts be 9 volts, or a lower voltage, or a higher voltage? 
   
  2.(a) Which type of meter always contains a source of voltage inside it, an 
  ammeter, or a voltmeter, or an ohmmeter? 
   
      (b)  Is the voltage-versus-current graph linear or nonlinear, for a neon lightbulb? 
   
  3.(a and b)  Imagine that a 1 ohm resistor is in parallel with a 0.5 ohm r