Download Electricity Unit Test Review

Date: _________________
SNC 1P – Electricity Unit Review
The following is a list of topics covered in this unit.
Please see the teacher website for a complete list of what was covered in this unit
and the dates they were covered.
1) Particle Theory and Structure of the Atom
2) 4 Laws of electric charges.
3) Conductors and Insulators (using the conductivity tester).
4) Charging by Friction, Contact, and Induction.
5) Using the electrostatic series to predict charges gained by friction.
6) 4 Components of circuits.
7) Measuring voltage and current in a circuit (ammeters and voltmeters).
8) Drawing series and parallel circuits.
9) Ohm’s Law (V=IR)
10) STSE: (Renewable Energies)
Practice questions
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Compare static and current electricity.
What type of charge moves through a circuit?
State the four points of the Laws of Electric Charges.
How does matter become negatively charged? How does it become positively charged?
Provide one example of how static can affect our everyday lives. Explain what is happening.
Define conductor and insulator. What are some examples of each?
What is charging by friction in your own words? Be specific
If a wool sweater is pulled over a cotton shirt and they rub together explain what will happen.
Discuss what charge each material receives how you know they receive these charges, what type of
charging has occurred, and how the materials will behave near one another after charging has
occurred.
9. Describe charging by contact.
10. A positively charged rod touches the knob of a neutral electroscope. Describe what will happen to
the leaves and explain why with detail.
11. Describe charge separation caused by induction. Are objects really charged when induction causes
charge separation? How can you tell from observing induction.
12. A negatively charged rod comes close to a neutral object (no contact is made). Describe what will
happen to the object. Discuss the movement of charges in your answer.
13. What would happen if you attached a ground to the side of the object farthest from the rod?
Explain your answer using a diagram.
14. Electricity always takes the easiest path to the ground. Why is the earth a good ground despite soil
and rock not being a good conductor?
15. What are the three criteria that determine whether charge will jump between objects?
16. Explain using a diagram how lightning forms.
17. Define Coulomb, current, voltage and resistance. Include the units and symbol for each.
18. What are the three math equations for Ohm’s Law?
19. Use the Ohm’s Law equations to explain the relationship between current and resistance.
20. Use the Ohm’s Law equations to explain the relationship between current and voltage.
21. A circuit with a resistor as a load is powered by a 6 V battery draws a current of 2 A. What is the
resistance of this circuit? Use GRASP to solve.
22. A hair dryer has a resistance of 10 Ω. What current will it draw if it is powered by a 110 V source?
Use GRASP to solve.
23. What instrument is used to measure current?
24. What instrument is used to measure voltage?
25. What does it mean for a load to be connected in series? What does it mean for it to be connected in
parallel? Use diagrams to support your answer
26. Draw a circuit with a light bulb and a resistor connected in series. Draw the same circuit but
connected in parallel.
27. Draw a parallel circuit with three branches. The power source in the main branch is a 12 V battery.
A bulb is in branch one and a resistor is in branch two. An open switch is in branch three with a
bulb.
28. Name three ways electricity is generated for use in our homes. Briefly explain how the source of
energy is used and give one advantage and one disadvantage of each.