Fuse and Breaker
After a fuse has blown, you must _______________________ the fuse before a current will flow again.
1. replace
In a light, the thin wire that runs through the bulb is called the __________________________.
2. filament
A ________________________ is a material in which electrons are able to move easily.
3. conductor
Most car batteries are what type of battery?_
12. lead-acid
What is the equation for electrical power?
15. P=IV
A ____________________contains a piece of metal that bends when the current in it is so large that it gets hot.
6. circuit breaker
When a filament heats up enough to glow, it produces ____________________ that can light up a room.
8. radiant energy
Insulators have _______________________ resistance.
4. very high
The process of transferring charge by touching or rubbing is called___
13. charging by induction
What is the equation for electrical energy?
19. E=Pt
To reset a ___________________ you must simply go flip a switch.
9. circuit breaker
The rate at which electrical energy is converted into another form of energy is the _______________________ .
11. electrical power
What material are most electric wires made from because it is such a good conductor?
5. copper
Most batteries you have around the house are what type of battery? (duracells)
14. dry-cell batteries
What is the equation that represents Ohm’s law?
31. I=V/R
In a house, all the electrical wires run back to either a _______________________ or a _________.
43. fuse box or circuit breaker
Electric companies are not concerned with the amount of power you use but they calculate the amount of __________________________ that you use.
17. electrical energy
In insulators, the electrons are held ___________________ than in conductors.
7. tightly
______ is the rearrangement of electrons on a neutral object caused by a nearby charged object.
16. charging by induction
What is the unit for electrical energy?
22. kWh
In a _________________________, each part contains a piece of metal that will melt if the circuit overheats.
47. fuse box
In a circuit, the ________________________ connects the energy converting device to the battery.
45. conductor
A material in which electrons are not able to move easily is a(n) _________________________.
10. insulator
A _______________________ is a transfer of charge between two object because of a buildup of static electricity. Lighting is a good example of this.
18. static discharge
What is the unit for current?
36. Ampere