There are two editions, one given by Woonsocket with a copyright of 2000/2002
The other was issued from some of the nearby towns with a copyright of 2007 |
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The Electroscope |
Read Prentice Hall, Electricity and Magnetism: "Electric Current and Magnetic Fields", pp. 30-35
(2007 ed.) "Electric Currents", pp. 44-47, questions p. 51 # 1 & 2 Key Terms: Conductor, Electroscope, Insulator, Static Charge
Read Prentice Hall, Electricity and Magnetism: "Electric Charge and static Electricity", pp. 46-53
(2007 ed.) "Electric Currents", pp. 34-41, questions p. 41 Observation & Analysis
Skip Lines What is static electricity? |
Soda Can Static Electircity |
Circuit Symbols |
Key Terms: Battery, Circuit, Closed Circuit, Electric Current, Energy, Knife Switch, Open Circuit, Switch
Read Prentice Hall, Electricity and Magnetism: "Circuit Measurements", pp. 56-61
(2007 ed.) "Electric Currents", pp. 48-51, questions p. 51 # 3 Key Terms: Circuit Diagram, Parallel Circuit, Series Circuit
Observation & Analysis
Skip Lines How does the number of paths that the current can follow differ between Circuits A and B? What type of circuit is Circuit A? In Circuit A, what happened to the bulb when the switch was opened? Why? In Circuit B, what happened to the bulbs when the switch was opened and closed? Why? Is Circuit C a series or a parallel circuit? How do you know/ What happened to the bulbs when the switch was opened and closed in Circuit C? |
The Galvanometer |
Key Terms: Electromagnetic Field, Galvanometer
Read Prentice Hall, Electricity and Magnetism: "Generating Electric Current", pp. 84-91
(2007 ed.) "Electricity, Magnetism, and Motion" & "Electricity From Magnetism", pp. 85-101, questions: 1. What is induction of electric current? 2. Compare and contrast a motor and a generators. 3. How is alternating current different from direct current? 4. Describe the different ways of spinning turbines to generate electricity? 5. What is the difference between a renewable and a nonrenewable energy source? Give an example of each. Observation & Analysis
Skip Lines What is the direction of the current through the coil in Step 2? What direction did the pointer move in Step 2? What can you conclude about the direction of the current in the circuit adn the direction of the pointer of the galvanometer/ What happens to the pointer of the galvanometer when the switch is opened? Why? |
A Control Circut |
Key Terms: Potentiometer, Rheostat, Variable Resistor
Construct a circuit diagram of this circuit in your notebook (step 2)
Observations & Analysis
Skip Lines What is happening to the current through the bulb if the bulb is dimming? What happened to the brightness of the bulb when Wire A was moved to the right of Pin 1 on the Nichrome wire? How does the length of the part of the Nichrome wire in the circuit change as Wire A is slid away from Pin 1? How does the resistance in the circuit change as Wire A is slid away from Pin 1? What happens to the current in the circuit as the wire slid away from Pin 1? What happens to the brightness of the bulb as the wire is slid to the right? |
Summary Notes |
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Comparing Currents |
Observation & Analysis
Skip Lines Is Circuit A series or a parallel circuit? How did the brightness of each bulb compare in Circuit A? How does the construction of Circuit B differ from that of Circuit A? How did the brightness of the bulbs in Circuit B compare with the brightness of the bulb in Circuit A? How do you think the currents in Circuits A and B compared? Why? How do Circuits C and D differ from Circuits A and B? Compare the brightness of the bulbs in Circuits C and A? Compare the brightness of the bulbs in Circuits D and B. Do you think the galvanometers had much effect on the brightness? How did the brightness of the bulbs in Circuits C and D compare to each other? How do the galvanometer readings compare in Circuits C and D? Using this information, what can you conclude about the readings of the galvanometer and the amount of current? |
Conservation of Current |
Observation & Analysis
Skip Lines How did the addition of the second light bulb to the circuit affect the deflection of the galvanometer pointer? What did the smaller deflection indicate about the current in this circuit, compared with the current in the circuit with the single bulb? How does Circuit 1 differ from Circuits A and B? How is Circuit 1 classified? How did the readings of the galvanometer compare at the two locations in Circuit 1? From these observations, how did the currents compare at the two locations? What type of circuit is Circuit C? How did the brightness of the Bulbs 1 and 2 compare? How did the brightness compare with the brightness of the bulb in Circuit 1? From your observations of the brightness of the bulbs, what can you say about the current through each of the bulbs in Circuit C and through the bulb in Circuit 1? How did the current through Bulbs 1 and 2 compare How did the current between the switch and the battery compare with the currents through the bulbs? |
Resistance |
Key Terms: Resistance
Table 1 Questions
Skip Lines How did the addition of the 50-cm (about 20 in.) length of Nichrome wire affect the galvanometer reading? How did the addition of the 100 cm (about 40 in.) length of wire affect the galvanometer reading? What can you conclude about the effect of the two different lengths of Nichrome wire on the current? Which length of wire do you think had the greater resistance? Observations & Analysis Skip Lines How did the Nichrome wire affect the candle? From this observation, what form of energy do you think was produced by the Nichrome wire? Why is the light bulb called an energy converter? Is the Nichrome wire in this circuit an energy converter? Explain. |
Batteries in Parallel |
Observations & Analysis
Skip Lines How did the galvanometer readings of the current through the resistor change when either switch was closed? From these observations, was the current through the resistors the same each time both of the two switches was closed? How did the current through the resistor change when both switches were closed? How did the galvanometer readings in each branch compare when both switches were closed? How did either of these two galvanometer readings compare with the galvanometer readings of the current through the resistor? Because the current in each branch is half that through the bulb, how much electric energy is each battery supplying to the bulb? |
Summary Notes |
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A Motor Model |
Key Terms: Electric Motor
Read Prentice Hall, Electricity and Magnetism: "Electricity, Magnetism, and Motion", pp. 78-81
(2007 ed.) "Electricity, Magnetism and Motion", pp. 85-89 Observations & Analysis
Skip Lines Why did the coil stop spinning? How could (did) you have kept the coil spinning? When the wires were connected to the battery and the coil was spinning, was the circuit always closed? What effect did the permanent magnet have on the coil when the circuit was opened? Closed? Is a motor an energy converter? How do you know? |
A 3-Way Switch Model |
Key Terms: Three-Way Switch, Two-Way Switch
Draw a circuit diagram that represents this circuit in your notebook (step 2)
Observations & Analysis
Skip Lines What were the position of the switches when the light was on? |
Summary Notes |
Test Study Guide |
Review Vocabulary TermsBatter
Conductor Electric Circuit Galvanometer Generator Insulator ion Power Resistance Static Charge Switch Transformer Positive and Negative Charge in Atoms Charge Attraction Friction Grounding a Charge Copper Wire Nichrome Wire Open and Closed Circuits Ohm's Law Magnetic Electric Motor Dry Cells/Wet Cells Alternating Current Kilowatt-hour Fossil Fuels/non-renewable Energy |
Extra Credit |
These "gizmos" may not work for all people.
Gizmo Lessons on Electricity - Print the lesson and complete the lesson |