Final Exam Review
Electricity
1. Define: a) Conductor:
b) Insulator:
c) Which of the two is better at holding a static electrical charge?
d) Why?
e) List each of the following as conductors or insulators:
i. metal door ii. plaster wall iii. glass window
iv. wooden cabinet v. plastic room divider
2. a) State the three parts of the Law of Static Charges:
i.
ii.
iii.
b) What will happen if two charged glass rods (rubbed with fur) are brought close together?
c) Why?
d) Object A has a negative charge. Object A is repelled by object B. Object B is attracted to object C and
repelled by object D. Object is C is attracted to object D.
What are the charges on objects: B
C
D
3. Metal ball A has a charge of +8 and metal ball B has a charge of +2. What will be the charges on the balls after they come in contact while remaining insulated from their surroundings? Diagrams may help you sort it out.
4. a) Draw a labelled sketch of a lightning cloud and the ground just before a lightning strike. Include charges in the cloud and the ground.
b) Define what lightning is:
c) Explain why lightning occurs based on the charges in the diagram above
5. Define: a) current:
b) resistance:
c) potential difference:
d) What is an alternate name for potential difference? ______
e) What units are used to measure?
i. current ii. resistance iii. potential difference
6. a) What is a "series" circuit?
b) Draw a schematic diagram of a circuit containing a three cell battery, a switch, & two lights connected in series:
c) What is a "parallel" circuit?
d) Draw a schematic diagram of a circuit containing a three cell battery, a switch, and two lights connected in parallel to one another:
e) What happens in the second lamp in each of the following:
i. the first lamp in a series circuit burns out:
ii. the first lamp in a parallel circuit burns out:
7. Draw a schematic diagram of a circuit containing a 3 cell battery, a switch, two lamps in series, with a voltmeter recording the potential difference across the first lamp, and an ammeter to measure current flow:
8. a) Define: i) renewable energy:
ii) non-renewable energy:
b) Identify each of the following as renewable or non-renewable:
i. coal ii. solar iii. wind
iv. biomass v. geothermal