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WorksheetsSection 1 MC Practice - Electrical Pples and Technologies
Total questions: 45
Worksheet time: 35mins
Electricity is the movement of electrons from one atom to another.
True
False
What is another name for the wires in a circuit?
Conductor
Load
Power Source
True or False: Conductors allow electrons to pass through easily.
True
False
What effect do like (similar) charges have on each other?
They attract
They repel
No effect
They reverse each other
What is an electric current?
a build up of electrons
the difference in charge between 2 points
the flow of electrons over a circuit
the opposition to flow of electrons
the positively charged particle in an atom, never leaves the nucleus, determines the element
proton
neutron
electron
the negatively charged particle in an atom, moves freely, can be released, shared, or “stolen” from an atom
proton
neutron
electron
An object that is neutral contains the same number of electrons and protons.
True
False
What is the major difference between static electricity and current electricity?
Current electricity involves a continuous flow of elecrons; static electricity is a sudden transfer of protons
Current electricity can be deadly; static electricity is almost always safe
In current electricity, there's a single transfer of electrons; in static electricity, there's a steady flow of electrons
Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons
During a lab a balloon was rubbed with a wooly fabric. This is an example of which type of charging?
conduction
friction
induction
What is a device that contains a thin strip of metal that melts if there is too much current through it called?
third prong
circuit breaker
fuse
short circuit
You want to build a device that can conduct current, but that will be safe if touched by a person. Which of the following pairs of materials could you use?
glass for the conductor and rubber for the insulator
copper for the insulator and silver for the conductor
sand for the conductor and plastic for the insulator
plastic for the insulator and silver for the conductor
Which of the following is NOT an example of a conductor?
pickle
metal bottle cap
glass
copper wire
What connects any metal pieces of an appliance to the ground wire of the building?
third prong
fuse
circuit breaker
short circuit
grounded
What is the term for a reusable safety switch that breaks the circuit when the current gets too high?
third prong
fuse
circuit breaker
short circuit
grounded
What is the function of the third prong?
to break the circuit if the current gets too high
to connect appliances to the ground wire of a building
to melt if too much current runs through it
to start a fire if there is too much current
All electrical plugs have at least _________ prongs
1
2
3
4
3-prong plugs have a ___________ wire.
floor
grass
ground
groundhog
Is this a cell or a battery?
cell
battery
Is this a cell or a battery?
cell
battery
There are two main types of cells, ____________ cells and _______ cells.
super, resistive
dry, wet
cold, hot
damp, not damp
In dry cells, the electrolyte is a (a) .
In a dry cell, the electrons are carried on the _____________
electrode
voltorb
sealant
battery
Electrons will always flow from the _________ terminal to the ____________ terminal
negative, positive
positive, negative
In the electric cell, the...... Energy is converted into electric energy
Kinetic
Magnetic
Chemical
Mechanical
Calculate the voltage applied when a 60 watt light-bulb uses a current of 5 amps
300 volts
30 volts
12 volts
0.08 volts
A kilowatt (kW) is how many watts?
10
50
100
1000
