PCC PHY 103 - Electric Circuits (5 pages)

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Electric Circuits



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Electric Circuits

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Lecture Notes


Pages:
5
School:
Portland Community College
Course:
Phy 103 - Fundamentals Of Physics III

Unformatted text preview:

Phy 103 Fundamentals of Physics III Instructor Tony Zable 1 Experiment Electric Circuits Objectives o o o To explore simple electric circuits To investigate parallel and series wiring in electric circuits To explore the relationship between electric current and potential difference in electric circuits Preliminary Questions Consider the following electric circuit A B VD C 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 V AD compare to the potential difference from point B to C VBC 3 How does the potential difference from A to B V AB 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 V Phy 103 Fundamentals of Physics III Instructor Tony Zable 2 2 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 t want 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 1 st bulb Question 5 2 Based on your observation how does the current flowing the 2 nd bulb compare to the current flowing through the 1 st 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 1 st 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 Instructor Tony Zable 3 V Question 7 1 How does the brightness of the 2nd bulb compare to the brightness of the 1 st bulb Question 7 2 Based on your observation how does the current flowing



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