Exercises
Exercise 9A: Voltage and Current- How many different currents could you measure in this circuit? Make a prediction, and then
try it.
What do you notice? How does this make sense in terms of the roller coaster metaphor intro-
duced in discussion question 9.1.3A on page 539?
What is beingused upin the resistor?- By connecting probes to these points, how many ways could you measure a voltage? How
many of them would be different numbers? Make a prediction, and then do it.
What do you notice? Interpret this using the roller coaster metaphor, and color in parts of the
circuit that represent constant voltages.- The resistors are unequal. How manydifferentvoltages and currents can you measure? Make
a prediction, and then try it.
What do you notice? Interpret this using the roller coaster metaphor, and color in parts of the
circuit that represent constant voltages.572 Chapter 9 Circuits