Combo Circuits
7. Using the button on the lower left, change your simulation
to the circuit diagram look. Create the circuit shown in the
diagram. Make sure the resistors have the resistances
shown in the diagram.
a. Identify which components in the circuit are in
series with each other, and which components are
in parallel.
+9V 0.44A
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R1
15Ω
R2
10Ω
R3
b. Using Ohm's Law and the Loop Rule, find the voltage drops across all three
resistors.
c. Using Ohm's Law and the Junction Rule, find the current through all three resistors.
2
d. Based on this information, what should the resistance of Resistor 3 be?
e. Set the resistance of the Resistor 3 to the amount you calculated, and test your
circuit. Does your answer produce the correct amounts of current and voltage? If
not, explain where you went wrong.