12.07.2015 Views

Simple Nature - Light and Matter

Simple Nature - Light and Matter

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ExercisesExercise 9A: Voltage <strong>and</strong> Current1. How many different currents could you measure in this circuit? Make a prediction, <strong>and</strong> thentry it.What do you notice? How does this make sense in terms of the roller coaster metaphor introducedin discussion question 9.1.3A on page 519?What is being used up in the resistor?2. By connecting probes to these points, how many ways could you measure a voltage? Howmany of them would be different numbers? Make a prediction, <strong>and</strong> then do it.What do you notice? Interpret this using the roller coaster metaphor, <strong>and</strong> color in parts of thecircuit that represent constant voltages.3. The resistors are unequal. How many different voltages <strong>and</strong> currents can you measure? Makea prediction, <strong>and</strong> then try it.What do you notice? Interpret this using the roller coaster metaphor, <strong>and</strong> color in parts of thecircuit that represent constant voltages.552 Chapter 9 Circuits

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