Purple Umbrellas

• Easy
  There is 100 V flowing through [sic] a circuit with a 20 A [sic] resistor. What is the current?
• Medium
  Explain the relationship between voltage, current and resistance in series and parallel circuits, respectively.
• Hard
  You must wire a 2-room house with 2 outlets in each room. Each room must have:
  -- a T.V.
  -- a space heater
  -- a hairdryer
  There must be a radio, a soldering iron, and a microwave in one of the rooms -- wire the house!

Blue Hens

• Easy
  What is Ohm's law and how does it apply to this circuit? [Drawing of 12 V battery connected across an 8 ohm resistor.]
• Medium
  A hair dryer draws a current of 12 A when it is connected to a 120 V ac line. What is the power consumption of the dair dryer?
• Hard
  An 800 W toaster, a 1000 W iron, and a 700 W food processor are all connected to a 115 V circuit with a fuse at 15 A. If these appliances are all turned on will the fuse blow? Explain.

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"http://www.physics.udel.edu/~watson/scen103/exer6.html"
Last updated Oct. 9, 1996.
Copyright George Watson, Univ. of Delaware, 1996.