Phy 103: Fundamentals of Physics III 1Instructor: Tony ZableExperiment: Electric CircuitsObjectives:o To explore simple electric circuitso To investigate parallel and series wiring in electric circuitso To explore the relationship between electric current and potential difference in electric circuitsPreliminary Questions: Consider the following electric circuit: V A B C D 1. How does the current in the circuit compare at points A, B, C, and D? Explain.2. How does the potential difference from A to D (VAD) compare to the potential difference from point B to C (VBC)?3. How does the potential difference from A to B (VAB) compare to the potential difference from point C to D (VCD)?Procedure:1. Using a bulb, connecting wires and a battery connect a simple electric circuit as shown below. VPhy 103: Fundamentals of Physics III 2Instructor: Tony Zable2. Observe the brightness of the light bulb when the circuit is connected. Record observations. 3. Disconnect the battery from the circuit after you have made your observations (you don’twant to run down the battery).4. Connect a second identical bulb to the circuit above, as shown below. The bulbs should be wired in “parallel”. V 5. Observe the circuit and record your observations.Question 5-1: How does the brightness of the 2nd bulb compare to the brightness of the 1st bulb?Question 5-2: Based on your observation, how does the current flowing the 2nd bulb compare to the current flowing through the 1st bulb?Question 5-3: Does the brightness of the 1st bulb change with the 2nd bulb connected? Explain.Question 5-4: Do you think the potential difference across 1st bulb changes with the 2nd bulb connected? Explain.6. Disconnect the circuit in step 5.7. Using the same components, connect the 2 light bulbs in a series circuit as shown below.Phy 103: Fundamentals of Physics III 3Instructor: Tony Zable V Question 7-1: How does the brightness of the 2nd bulb compare to the brightness of the 1st bulb?Question 7-2: Based on your observation, how does the current flowing the 2nd bulb compare to the current flowing through the 1st bulb?Question 7-3: Does the brightness of the 1st bulb change with the 2nd bulb connected? Explain.Question 7-4: Do you think the potential difference across 1st bulb changes with the 2nd bulb connected? Explain.8. Disconnect the circuit in step 7.9. Using 2 additional light bulbs and a flip switch, set-up the circuit shown below. (The switch, S, is initially closed as shown in the diagram.)V1234S (switch)Phy 103: Fundamentals of Physics III 4Instructor: Tony Zable10. With the switch closed, observe the brightness of the bulbs. Record your observations.Question 10-1: Describe the brightness of the bulbs. Rank the bulbs according to their brightness.Question 10-2: Based on bulb brightness, rank the bulbs according to their brightness.Question 10-3: What can you say about the potential difference across each bulb? Rank the potential difference across the bulbs based on your observations above.11. Open the switch, S, and observe the brightness of the bulbs. Record your observations.Question 11-1: What happens to the current through bulb 1 when the switch is opened?Question 11-2: What happens to the current through bulb 2 when the switch is opened?Question 11-3: Based on your answer for questions 11-1 and 11-2, how does the currentthrough bulb 2 with the switch opened compare to the current through bulb 1 when the switch was closed (before the switch was opened).Phy 103: Fundamentals of Physics III 5Instructor: Tony ZableQuestion 11-4: What can you conclude about the wiring of the various bulbs?i) How are bulbs 2 and 3 connected?A. In series.B. In parallel.C. In series and parallel.D. Neither in series nor parallel.ii) How are bulbs 1 and 3 connected?A. In series.B. In parallel.C. In series and parallel.D. Neither in series nor parallel.Final Questions:1. Observe the circuit diagram on the right.i. Which resistors in the diagram are connected in series?A. I and IIB. I and IIIC. II and IIIJ. None of these resistors are in series.ii. Which resistors in the diagram are connected in parallel?A. I and IIB. I and IIIC. II and IIIJ. None of these resistors are in parallel.2. Observe the three circuit diagrams I, II and III on the right. All the resistors have different values.i. In which figure(s) are the two resistors in series?ii. In which figure(s) are the resistors in