No student devices needed. Know more
94 questions
What is this a picture of? (a)
These diagrams represent...
Combination Circuit
Combination Circuit
If you built a home, this is the type of circuitry you should install in your home.
Series Circuit
Parallel Circuit
In a parallel circuit, what happens if one of the loads is broken?
In a series circuit there are 4 light bulbs.
Compared to a parallel circuit with all the same components, the bulbs in the series circuit would be
brighter.
dimmer.
same brightness as in a parallel circuit.
In a series circuit of 3 light bulbs, what happens if one of the bulbs burns out?
The circuit is broken and all the bulbs will go out.
The circuit is partially broken and some of the bulbs will still work.
The circuit is closed.
The other bulbs will be brighter now.
If a switch has been been moved into the closed position in a circuit, then
the current will flow.
the current will stop.
This type of material does not allow electricity to flow through it.
Conductor
Resistor
Insulator
Transistor
This material causes electron friction in a circuit, and can convert electricity to heat and light energy.
Conductor
Insulator
Resistor
Microcircuit
This material allows electric current to flow very easily through it.
Conductor
Insulator
Resistor
Plastic
Which is better at conducting electricity?
Distilled water
Tap water
These allow the most current to pass through a circuit...
insulators
resistors
superconductors
conductors
A polygraph machine functions because of the conduction of current in a person's
blood
sweat
bones
brain
Which of these two circuits would have the brightest bulbs?
A
B
This is the symbol for a _____?
switch
light
battery
wires
What is this symbol?
volts.
watts.
coulombs.
amperes
The unit for current is
I
V
A
The tendency for a material to oppose the flow of electrons is called...
current
transistor
resistance
difference
According to Ohm's Law, what are the two factors that influence resistance?
power and energy
current and voltage
What is the formula for resistance?
Does the top diagram or bottom diagram show more resistance?
top
bottom
neither
How many electron paths are in a series circuit?
What size resistor would produce a current flow of 5 A with a battery voltage of 12.6 V?
60 Ω
2.52 Ω
1.71 Ω
5.04 Ω
I=1000 mA
V=6 V
What is the resistance?
6 Ω
60 Ω
600 Ω
6000 Ω
According to Ohm's Law, if the Voltage is increased and the resistance stays the same, Current will
Increase
Decrease
Stay the same
A Charging system producing 14.5 Volts with a current flow of 43.5 Amps, what is the resistance in the circuit?
58 Amps
0.33 Amps
13 Amps
1 Amp
What word means how many electrons flow past a point in a certain amount of time?
Current
Voltage
Resistance
What word means how difficult it is for electrons to flow through a circuit?
Current
Voltage
Resistance
Power
This symbol represents which of the following components?
A variable resistor is also called a ...
rheostat
superconductor
voltmeter
polygraph
The picture shows...
Variable resistor
Fixed resistor
buzzer
LED
The picture shows...
Lamp
Buzzer
Motor
Switch
Compared to a short waterfall, a tall waterfall represents...
high current
high voltage
high resistance
high variability
What is a transistor?
a type of bulb
a type of circuit
a rheostat
a microcircuit switch
What does a transistor do?
tiny device that acts like a switch
allows electrons to only flow in one direction
creates a static charge
turns on when light hits it
What is an integrated circuit?
a source of current
miniature electronic components
a type of electrochemical cell
A schematic is a
photo of electrical parts
simplified drawing using symbols
battery
type of rheostat
This is the circuit symbol for ...
a current source
a resistor
an ammeter
a voltmeter
This is the circuit symbol for ...
buzzer
LED bulb
a battery
a single cell
If you have three 1.5V cells in series, what is the total battery voltage?
3.4 V
4.5 V
1.5 V
3 V
If Lamp B burns out, will the other lamps continue to work?
yes
no
Which of these two circuits would have the highest amount of current?
A
B
Which of these two circuits would need the battery replaced more often?
A
B
Compared to a narrow waterfall, a wide waterfall represents...
high current
high voltage
high resistance
high friction
The rocks in this waterfall represent...
high current
high voltage
high resistance
high friction
A thin wire will have more _____ than a thick wire.
current
protons passing through it
resistance
electrons passing through it
This incandescent bulb will light up because of ....
high current passing through it
high amount of protons passing through it
high resistance to electrons passing through it
high amount of electrons passing through it
Resistance causes this oven element to heat up because it is made out of __________.
thin Nichrome wire
thin copper wire
Shorter length of wire will produce more resistance than a longer length of wire.
true
false
Most metals will become more conductive when they are ....
hot
cold
Consider the three identical light bulbs shown in the circuit. Bulbs B and C are wired in series with each other and are wired in parallel with bulb A. When the bulbs are connected to the battery as shown, how does the brightness of each bulb compare to the others?
Bulbs B and C are equally bright,
but bulb A is less bright.
Bulbs B and C are equally bright,
but less bright than bulb A.
All three bulbs are equally bright.
Bulbs A and B are equally bright, but bulb C is less bright.
What is the resistance of the lamp?
3 Ω
12 Ω
0.3 Ω
108 Ω
Which of the following is an example of insulator?
steel
paper
Which of the following is an example of conductor?
rubber
metal spoon
silver
insulator
conductor
glass
insulator
conductor
aluminum
insulator
conductor
Which one is the circuit diagram of this picture?
What will happen if one light bulb is removed from this circuit?
The other bulbs will go out.
The other bulbs will stay on
The other bulbs will get dimmer.
The battery will become stronger.
Which is the series circuit?
1
2
3
4
Whose circuit would have the brigher bulbs?
Isabella
Matthew
Whose circuit would have the most resistance?
Isabella
Matthew
Whose circuit would have the most current flowing through it?
Isabella
Matthew
Whose circuit would have the cell burn out faster?
Isabella
Matthew
Whose circuit would brighter bulbs?
Isabella
Matthew
Which diagram represents low resistance?
A
B
Variable resistor
LED
A dimmer switch is an example of a
resistor
variable resistor
photoconductor
transistor
If one of the bulbs in this circuit breaks, the other one will...
Go off
Stay on
If one of the bulbs in this circuit breaks, the other one will...
Go off
Stay on
In a series circuit with a constant voltage, what happens to the current as you add more loads or more resistance?
Current increases
Current decreases
Current decreases then increases
Current remains the same
Does electricity flow if the switch is open or closed?
Open
Closed
Electricity flows through either way
Electricity can't ever flow through a switch
This symbol shows a/an __________.
ammeter
voltmeter
current
resistor
Whic diagram represents the description?
Which row correctly fills in the blanks?
A
B
C
D
Which component is protected by the circuit breaker?
furnace motor
exhaust fan
heater
light
0.28Ω
2.3.Ω
8.8Ω
36Ω
Choose the correct sentence.
This circuit will work because it is an
open circuit
This circuit will work because it is a
closed circuit
This circuit will not work because it is an
open circuit
This circuit will not work because it is a
closed circuit
Using the diagram provided, identify the switch.
Which lamps will light up? Select all the lamps that will light up.
The graph shows three different wires . Whish wire has the highest resistance?
1
2
3
Replace the paper clip with a plastic spoon. What happens?
The bulb does not light
The bulb gets dimmer
The wires get hot
There is no change
Transistors act like tiny ____________ in microcircuits.
electron sources
switches
batteries
loads
A lie detector indicates that a person is telling a lie because there is ...
a decrease in resistance
an increase in resistance
no change in conductivity
a decrease in conductivity
A microcircuit is an integrated circuit used in (a)
voltage and (b) current devices.
Explore all questions with a free account