PhysicsQuest: Circuits

Instructions:

Answer the following questions using the links provided (you may find another link if these aren’t working).  Write your answers on a piece of paper and turn it in by the end of class.  Most answers need more than a sentence to answer well.

  1. Find the electrical symbols for a Resistor, Light Bulb, Battery, Switch, and Capacitor (There are multiple ways to draw them, we will be going over them in class.)
    1. http://www.google.com

 

  1. What is a short circuit and why is it bad?
    1. http://en.wikipedia.org/wiki/Short_circuit

 

  1. What is the definition of a series circuit? Include a circuit diagram of a series circuit.
  2. If you have a circuit with 5 light bulbs connected in series, what happens to the other light bulbs when any one of them burns out?
  3. What is the equation for calculating equivalent resistance in a series circuit?
  4. In a series circuit, what equation relates the current through the battery, and the current through each resistor?
  5. In a series circuit, what equation relates the voltage of the battery, and the voltage in each resistor?
    1. http://www.physicsclassroom.com/class/circuits/Lesson-4/Series-Circuits

 

  1. What is the definition of a parallel circuit? Include a circuit diagram of a parallel circuit.
  2. If you have a circuit with 5 light bulbs connected in parallel, what happens to the other light bulbs when any one of them burns out?
  3. What is the equation for calculating equivalent resistance in a parallel circuit?
  4. In a parallel circuit, what equation relates the current through the battery, and the current through each resistor?
  5. In a parallel circuit, what equation relates the voltage of the battery, and the voltage in each resistor?
    1. http://www.physicsclassroom.com/class/circuits/Lesson-4/Parallel-Circuits

 

  1. Why don’t birds get electrocuted when they land on high voltage power lines?
    1. http://hyperphysics.phy-astr.gsu.edu/hbase/electric/watcir2.html#c4

 

  1. Why do some plugs have 2 prongs while others have 3 prongs?
    1. http://electronics.howstuffworks.com/everyday-tech/question110.htm

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