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- 1. Multiple Choice
Electricity is the flow of what?
Protons (at least in solids)
Neutrons
Electrodes
Electrons (at least in solids)
- 2. Multiple Choice
What happens in a wet cell battery when a low current is passed through the battery in reverse of the normal flow?
The battery is re-charged (because the chemical reaction occurs in reverse)
The battery will get hot and explode
Nothing, batteries only work in one direction
The chemical reactions will undo themselves and atoms will begin to split in a chain reaction
- 3. Multiple Choice
The electrical "pressure" that pushes charges through a circuit is called what?
Voltage
Current
Electrical Power
Resistance
- 4. Multiple Choice
The amount of electricity flowing through a wire is called what?
Voltage
Current
Electrical Power
Resistance
- 5. Multiple Choice
This is the unit used to measure resistance.
Volts
Amperes
Killowatts
Ohms
Joules or Kilowatt-hours
- 6. Multiple Choice
This is a unit for Electrical Power. It is 1,000 Joules per second.
Volt
Ampere
Ohm
Kilowatt
Joule or Kilowatt-hour
- 7. Multiple Choice
This is the unit of electrical flow. It measures current.
Volt
Ampere
Ohm
Kilowatt
Joule or Kilowatt-hour
- 8. Multiple Choice
How does the diameter of a wire affect its resistance?
Thinner Wire = More Resistance
Thicker Wire = More Resistance
The material the wire is made out of is the only thing that affects resistance
The diameter doesn't matter, just the length
- 9. Multiple Choice
How does the length of a wire affect its resistance?
Longer wire = more resistance
Shorter wire = more resistance
The material the wire is made of is the only thing that affects resistance
The length doesn't affect the resistance, just the diameter of the wire
- 10. Multiple Choice
Resistance in a wire causes electrical energy to be converted into which type of energy? (Ohms Law)
Potential
Elastic
Thermal
Chemical
Nuclear
- 11. Multiple Choice
Which part of a dry cell battery is used as a conductor to transfer free electrons?
The Zinc container
The chemical paste
The Plastic Coating
The conductive (acid) solution
The Carbon (Graphite) Rod
- 12. Multiple Choice
An object becomes positively charged when it ___________.
Loses Electrons
Gains Electrons
Loses Protons
Gains Neutrons
Loses Neutrons
- 13. Multiple Choice
A device that can detect if a charge is present, but cannot determine whether it is positive or negative.
Van DeGraph Generator
Electrolysis Gel
Electroscope
Geiger counter
- 14. Multiple Choice
How do two negative charges react when they are brought near each other?
They don't react
They repel each other
They will both move in the same direction at the same time (their both negative)
- 15. Multiple Choice
Which of the following is an insulator?
Copper
Plastic
Silver
Salt Water
- 16. Multiple Choice
Which of the following is a good conductor?
Distilled Water
Aluminum
Dry Air
Rubber
- 17. Multiple Choice
The process of connecting an object with the Earth via a conductor is called what?
Charging
Draining
Grounding
Induction
Fusing
- 18. Multiple Choice
What is essential in order for lightning to form?
Electrified Birds
Ionized Gasses in the atmosphere
Charged Salt Water in clouds
Thunder
Strong upward movement in clouds called "updrafts"
- 19. Multiple Choice
The process of giving an object a partial charge by bringing it near another charged object.
Static Electricity
Law of Conservation of Charge
Charging by Contact
Charging by Induction
- 20. Multiple Choice
Electricity generated when an uneven number of charges are present in or on an object.
Static Electricity
Current Electricity
Charging by Contact
Charging by Induction
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