WorksheetsElectricity Review
Total questions: 39
Worksheet time: 1hrs 15mins
Name
Class
Date
1.
What would happen if the switch shown above was closed?
a)
Both light bulbs would light up
b)
Both light bulbs would go out
c)
One light bulb would light up
d)
One light bulb would go out
2.
When an electric current can travel along more than one path, it is traveling in a ___.
a)
parallel circuit
b)
closed circuit
c)
open circuit
d)
series circuit
3.
What type of circuit is illustrated in the example?
a)
Series circuit
b)
In-line circuit
c)
Parallel circuit
d)
Static circuit
4.
What type of circuits should a new house you are building use?
a)
Parallel
b)
Positive
c)
Registered
d)
Series
5.
If both battery packs contain the same number and type of batteries, why does a serial arrangement produce greater voltage?
a)
In a serial arrangement, all electrons move consecutively through the batteries, thus increasing voltage.
b)
In a parallel arrangement, all protons move consecutively through the circuit, thus creating a larger voltage.
c)
In a serial arrangement, all components are connected across each other, forming two sets of electrically common points.
d)
In a parallel arrangement, all components are connected end to end, forming a single pathway.
6.
If one battery is removed from the serial arrangement, what is the resulting voltage? (Hint: Each battery provides 1.5V of electricity)
a)
4.5V
b)
6.0V
c)
1.5V
d)
3.0V
7.
If one battery is removed from the parallel arrangement, what is the resulting voltage? (Hint: Each battery provides 1.5V of electricity)
a)
1.5V
b)
3.0V
c)
4.5V
d)
6.0V
8.
In order to turn on the light, a piece of wire needs to be connected from ___.
a)
A to D
b)
A to C
c)
B to C
d)
C to D
9.
What would happen to the total resistance if another resistor was wired in series with the resistors in the circuit below?
a)
The total resistance will increase.
b)
The total resistance will decrease.
c)
The total resistance will be zero.
d)
The total resistance will stay the same.
10.
In the circuit shown, what would happen to light bulb #1 if light bulb #2 burned out?
a)
Light bulb #1 would keep burning.
b)
Light bulb #1 would burn out also.
c)
Light bulb #1 would explode.
d)
Light bulb #1 would shut off the power source.
11.
How does a battery produce an electric current in a circuit?
a)
The electrons move from the negative terminal of the battery to the positive terminal of the battery.
b)
The electrons move through the wire using the principle of electromagnetic induction.
c)
The electrons are attracted to the negative terminal of the battery and are repelled by the positive terminal of the battery.
d)
The electrons move back and forth very quickly, continually changing direction.
12.
Electric current is ___.
a)
increased when you increase the voltage.
b)
stronger than static electricity.
c)
decreased when you increase the voltage.
d)
a depletion of electrons.
13.
A circuit breaker is a device used to ___. (Big box in your home with lots of switches)
a)
prevent current overload
b)
deliver electricity
c)
convert potential energy to kinetic energy
d)
measure current
14.
In a parallel circuit, such as the following ___.
a)
Two or more paths of current run side-by-side.
b)
The bulbs operate at different voltages.
c)
All devices operate on the same current.
d)
The devices wired to the circuit always go on and off together.
15.
In a series circuit such as the following,
a)
the devices wired to the circuit always go on and off together.
b)
all devices operate at the same voltage
c)
all elements consume the same amount of power
d)
electrons flow on several paths
16.
Which is the BEST description of lightning?
a)
the sudden discharge of great amounts of static electricity
b)
an explosion of electromagnetic radiation
c)
effect of thunder
d)
the effect of clouds rubbing together
17.
Electrical current does not flow perfectly free in any material. The quality which hinders the flow of electric current is ____. (hint: opposes)
a)
friction
b)
conductance
c)
resistance
d)
reluctance
18.
Voltage is a measure of the ___.
a)
quantity of electrons in motion
b)
force pushing or pulling the electrons
c)
work electrons perform
d)
speed of the electrons
19.
What are these two circuit arrangements called?
a)
I is a parallel circuit, II is a series circuit.
b)
I is a grouped circuit, II is a networked circuit.
c)
I is a series circuit, II is a parallel circuit.
d)
I is a daisy-chained circuit, II is a grouped circuit.
20.
What would happen to the other light in this circuit if one light was removed?
a)
The other light would stay lit, and not change.
b)
The other light would go out.
c)
The other light would stay lit, but get dimmer.
d)
The other light would stay lit, and be brighter.
21.
How many loads are on this circuit?
a)
2
b)
0
c)
1
d)
3
22.
What is shown in the picture?
a)
Open parallel circuit
b)
Closed parallel circuit
c)
Closed series circuit
d)
Open series circuit
23.
The build up of charges on an object is called ___.
a)
static electricity
b)
electromagnetism
c)
magnetic fields
d)
stationary charges
24.
A circuit has a voltage of 2.5 and a resistance of 20 Ohms. What is the current?
a)
0.125 amps
b)
8 amps
c)
17.5 amps
d)
50 amps
25.
What is shown in the picture?
a)
Opened series circuit
b)
Closed series circuit
c)
Closed parallel circuit
d)
Opened parallel circuit
26.
What type of material does NOT allow electrons to flow easily?
a)
Insulator
b)
Conductor
c)
Circuit
d)
Series
27.
What would happen to the lights in this circuit if another light was added?
a)
They would all remain lit, but would be dimmer.
b)
They would all go out.
c)
They would all remain lit, but would be brighter.
d)
They would all remain lit, and their brightness would not change.
28.
Laundry in a clothes dryer often becomes charged with static electricity while drying. Which of these BEST explains why a clothes dryer often generates static electricity?
a)
Electrons are transferred as clothes rub against each other in the dryer.
b)
Heat from the dryer charges the air and produces lightning.
c)
Clothes with metal pieces conduct electricity in the dryer.
d)
Short circuits in the dryer charge the laundry.
29.
What is a diode?
a)
A semiconductor device that controls the flow of electricity in one direction.
b)
A temporary magnet that loses its magnetism when the electric current is removed.
c)
A semiconductor device made from silicon to enhance electrical signals.
d)
A device that converts mechanical energy into electrical energy.
30.
Which example is an insulator?
a)
Drinking glass
b)
Tin can
c)
Copper penny
d)
Piece of aluminum
31.
A transistor made from silicon is used in what type of device to amplify the electrical signal?
a)
Radio
b)
Generator
c)
Motor
d)
TV remote
32.
Rubber tires are an example of ___.
a)
an insulator
b)
a semiconductor
c)
a conductor
d)
an uninsulator
33.
What is the purpose of a transistor?
a)
To turn the flow of electricity on or off
b)
To enhance the magnetic properties of the conductor.
c)
To insulate the electric current.
d)
To remove the heat from the moving current.
34.
A light-emitting diode (LED) is considered a ___.
a)
semiconductor
b)
conductor
c)
insulator
d)
transistor
35.
A student needs to put insulator tubing around the wires in his circuit. What type of material should the student using for an insulator?
a)
Rubber
b)
Copper
c)
Silver
d)
Aluminum
36.
Transistors are semiconductors used to ___.
a)
amplify electrical signals
b)
to create a magnetic signal
c)
insulate an electrical signal
d)
lower the resistance of a magnetic signal
37.
Both bulbs are lit in the circuit. In order to turn off both lights, a switch must be installed at which marker?
a)
1
b)
2
c)
3
d)
4
38.
Which material is the BEST conductor for electricity?
a)
metal
b)
ceramic
c)
rubber
d)
glass
39.
Which can be used as an insulator?
a)
plastic
b)
silver
c)
steel
d)
copper
100 %
