Electrical Safety
Circuits
Magnetism
Electricity in our Homes
Vocabulary
100
When electricity moves only in one direction
Direct current
100
If Mrs. Wood wanted to make a circuit using items in her classroom, what could she use as a conductor out these items?
a) rubber band
b) pen
c) paperclip
d) glue stick
C) Paperclip
100
The basic building blocks of all objects and substances.
Atom
100
What do we use to measure electricity in our homes?
kWh - kilowatts/hour
100
What part of a circuit is this object?
Energy source / Cell / Battery
200
The moving of electrical charges.
Current
200
Draw this circuit using symbols
Mrs. Wood will decide if it works!
200
What is Ohm's law
V= RI
Voltage = resistance * Current
200
Which of these energuides is best for your home?
532 kWh / year
321 kWh / year
550 kWh / year
321 kWh / year
200
A complete loop through which an electrical current travels.
Closed Circuit
300
What charges does an electron, proton and neutron have ?
Electron- positive
Proton-negative
Neutron- neutral
300
In this circuit, would the lightbulbs be bright or dim? Why?
Dim. It is a series circuit so the energy is being shared with the three bulbs.
300
If you have a 12 Volt battery placed across a 6 Ohm resistor, what will the current be?
I = V/R = 12/6 = 2 A
300
What does this dial read?
66649
300
What opens and closes a circuit?
Switch
400
Electric charges builds up on the surface of an object
Static electricity
400
Does this diagram represent a series or parallel circuit?
Parallel
400
What do we call current that changes direction ?
Alternating current (AC)
400
What happens to the brightness of the light bulbs in a series circuit when you add more lights.
Each bulb gets dimmer
400
This is where electrical flow can happen easily. A good example would be copper
conductor
500
Continue movement of electron flow in a circuit
Current
500
What kind of circuit is this?
Series
500
What is the unit of measurement for electrical current?
Ampere (A)
500
If an appliance uses 24 kWh / month, how many does it use it 10 months?
240 kWh
500
Aluminum foil - conductor or insulator ?
Conductor