Answer A2-5

A. GROUP ACTIVITY In this activity, you will build and examine a complex circuit that contains several resistors. 150 Q 100 Q 330 0 31kQ 8V 220 9 470 9 Figure 1 A1. Using the resistors supplied, build the above circuit. You may find the resistor code guide at the beginning of this lab useful. Check with your TA if you're not sure your circuit is set up correctly. Before finding the total resistance of the circuit as a whole, you need to figure out which resistors are in series and which are in parallel. A2. How can you tell if two circuit elements are in series? Can more than two circuit elements be in series? Are the power supply and the 100 $2 resistor in series? What about the power supply and the 150 $2 resistor? List some resistors that are in series in the circuit you built (if there are any). A3. How can you tell if two circuit elements are in parallel? Can more than two circuit elements be in parallel? Are the 150 $2 resistor and the 220 $2 resistor in parallel? What about the 100 S resistor and the 470 $2 resistor? What about the 330 $2 resistor and the 1 k $2 resistor? List some resistors that are in parallel in the circuit you built ( if there are any). A4. Sometimes, a certain circuit element is neither in series nor in parallel with another element. List pairs of circuit elements that are neither in series nor in parallel with each other, A5. Calculate the equivalent resistance of the circuit. Use this to calculate the current that passes through the power supply. Measure the current through the power supply, with uncertainty. Is it consistent with your calculation? How precisely do you know the values of the resistors? A6. If two circuit elements are in series, the currents through each of them should be the same. Can you think of a way to test this using the equipment you have in front of you? Do so, and record your measurements. Did you confirm the above statement? A7, If two circuit elements are in parallel, the voltage drops across each of them should be the same, Can you think of a way to test this using the equipment you have in front of you? Do so, and record your measurements, Did you confirm the above statement