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WorksheetsElectrical Fundamentals Knowledge Check
Total questions: 60
Worksheet time: 30mins
The pressure that moves the electrons in the circuit?
Resistance
Current
Voltage
None of the above
An insulator is ____?
Materials that allow the electrons to move freely through them
Materials that allow the electrons to move partially through them
Materials that do not allow the electrons to move freely through them
None of above
An electrical quantity that reduces the electric current in the circuit by resisting the flow of the electron is called?
Resistance
Current
Voltage
None of the above
The flow of the electric charge in a conductor, because of free moving electrons is called ____?
Voltage
Current
Resistance
None of above
High resistance is typically caused by____?
Corrosion,
Loose objects, Missed connections
Corrosion, Foreign material, closed switch
Corrosion, Foreign material, Variable resistance
Corrosion, Foreign material, Loose ground shots
It important to identify the circuit you are working on?
True
False
DC is called --------------- in which the current flows in ----------------------------
Direct Circuit, Series
Direct Current, Parallel
Direct Current, One Direction
Direct Combination, Any Direction
A short to power is?
When the variable resistor supplied resistance is too low.
When the switch on the indented circuit is stuck closed
When voltage varies across the supplied loads
When the source voltage is not consumed by the load
a terminal or harness connected to a power supply
An open (OL) circuit is caused by?
Broken Wire
Loose Connection
Short to Power
Faulty Component
Closed Switch
A type of resistor ,in which the resistance value can be changed from 0 to a particular value is called?
Rheostat
Variable
Thermistor
Force-Sensing
The unit for measuring Current is ____?
Volt
ohms
Ampere
Watt
A circuit is complete when current is carried back to ____?
The module
The chassis
The load
The ground return
____________________ is the instrument used to measure current,voltage,resistance
Voltmeter
Ohmmeter
Ammeter
Multimeter
The unit for measuring resistance is
Ampere
Ohms
Volts
__________________ have more free electrons
Conductors
Insulators
________ is an example of source of Electric Potential or Voltage in an Electric Circuit.
RESISTANCE
BATTERY
VOLTMETER
AMMETER
__________ is defined as the flow of electrons in an electric circuit.
Electric Meter
Electric Charge
Electric Current
None of these
What are the 2 types of short circuit discussed?
Short to Power
Short to Load
Short to Power
Short to Ground
Short to Ground
Short to Circuit
Short to Ground
Short to Chassis
What is the correct formula for Ohm's Law?
V=I/R
V=IxR
V=R/I
V=I+R
Current in the circuit will increase as we increase the Battery Voltage.
TRUE
FALSE
What are the 3 circuit types failure discussed?
Open (OL)
Short Circuit
Bent Pin
Short circuit
Pulled Pin
Broken Wire
Swapped Pins
High Resistance
Open (OL)
Open (OL)
Short Circuit
High Resistance
AC is called ----------------- in which current changes its ------------------- many times a second at regular intervals.
Alternating Circuit, Opinions
Alternating Curriculum, Classes
Alternating Circuit Board, Polarity
Alternating Current, Direction
A ________________ is a device that stores electrical energy.. The energy is stored in such a way as to oppose any change in voltage.
Resistor
Capacitor
Inductor
Conductor
True or false: Good conductors will have a low resistance.
True
False
Maybe
What is a short to ground?
When the current flows through the car body to ground instead of flowing through the intented circuit
When the power wire is powering an unintended load.
When the fastener contacts the load while power is applied
When you fail to twist the conductors as specified by the wiring diagram
A fundamental law of electricity is that the electron flow is directly proportional to the applied voltage. If the voltage is increased, the flow is increased. True or false?
True
False
This theory states that the flow of electrons are from positive to negative . This reference to the flow of electrons is now known as ?
Electron flow
Conventional flow
Conductional flow
Laminar flow
What is the unit of measurement for electrical resistance?
The symbol used to represent this is the Greek letter omega .
(a)
What is a Short Circuit?
An accidental path of low resistance causing an abnormally high amount of current to flow.
A section of a circuit that has a complete path for current
The point where individual branch wires join the main circuit
It is when a break or an open exists in a complete conducting pathway.
This is the symbol for a
Fuse
Resistor
Connector
Variable Resistor
If the voltage is 12 volts and the resistance is 2, how many amps do you have?
4
3
8
6
Which of the following is an example of a load in a circuit?
Battery
Wire
Fuse
Bulb
If the circuit is continuous from the battery, through all the wires and components, and back to the battery ground it is said to have
Continuity
a short to voltage
A short to ground
High resistance
Copper wire is a good ______________________________.
insulator
resistor
conductor
power source
A complete circuit that has only one path to ground is called a _______________________ circuit
parallel
series-parallel
short
series
The total resistance in a series circuit is the ____________ of all the individual resistances.
Quotient
Sum
Remainder
Voltage
If a series circuit has 4 resistors that are 2 ohms each, the total resistance of the circuit would be:
10
2
6
8
This is the electrical symbol for a __________________________.
connector
ground
switch
battery
A circuit with 4 ohms of resistance and 3 amps would have _________________ volts.
7
1
12
1.33
When using a digital multimeter the black lead connects to the hole marked _________________________.
V
A
COM
None of the above
A ____________________circuit has more than one path to ground.
series
short
series-parallel
parallel
When measuring with a digital multimeter on an automotive vehicle for voltage you should select the_______________ symbol on the selector dial.
DC
AC
mA
A
If a circuit has no continuity is is said to be ______________.
closed
shorted to ground
open
shorted to voltage
When your digital multimeter reads an open circuit it will usually have ___________ on the screen of the multimeter.
0000.
OL
?
1.
Which circuit flows in only one path?
Open Circuit
Parallel Circuit
Series Circuit
The circuit is complete when the current is carried back to the source by the -------------------.
Driver.
Ground Return
Elon Musk
Conductor
What type of measurement requires the component to be isolated and power removed?
Voltage
Current
Resistance
Frequency
Nothing will happen to the multimeter if you accidentally chose the wrong setting in measuring a power outlet.
True
False
Which best describes direct current?
An audio or radio signal
Reverses direction many times a second
Measures magnitude of earthquakes
Electric current only flows in one direction
A multimeter must be connected in ______ to measure current.
Series
Parallel
Series-Parallel
Combination
What type of measurement is taken parallel to load, so that the circuit is not effected?
Current
Resistance
Temperature
Voltage
The meter is set to measure:
DC Voltage
AC Voltage
AC/DC amperage
DC Milli-amps
The meter is set to measure:
DC Voltage
AC Voltage
Resistance
DC Milli-amps
What does this mean?
The leads are shorted together
The meter is in overload mode
The value is over the limit capability of the meter
The amp fuse is blown
Which lead port should be used to measure 122 ma?
Port 1
Port 2
Port 3
Port 4
Which selection would be used for measuring AC Voltage
Which selection would be used for measuring 3.62 A
When the current through a fuse gets too high, the wire inside the fuse will...
create a spark
melt
sound an alarm
do nothing
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
