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WorksheetsFinal Review
Total questions: 30
Worksheet time: 15mins
What is the name of the formula E = I x R?
Ampere’s law
Voltaire’s law
Ohm’s law
What is the current in a 12-volt circuit with a 6-ohm resistor connected series?
2 amps
4 amps
6 amps
The unit for measuring electrical current is _____.
amperes
ohms
volts
The unit for measuring electrical resistance is _____.
amperes
volts
ohms
The unit for measuring electrical pressure (force) is _____.
amperes
volts
ohms
Which of the following is a source of energy in an automobile’s electrical system?
battery
AC generator
both answers are correct
Technician A says current will decrease with a decrease in resistance. Technician B says current will increase with an increase in resistance. Who is correct?
tech a
tech b
both
neither
Electricity is the flow of protons from one atom to another
true
false
The chemical reaction in a battery causes a lack of electrons at the positive (+) terminal
true
false
Electromotive force is measured in volts.
true
false
The waveform of AC voltage is typically a _____.
square wave
sine wave
flat line
When testing resistance in a circuit with an ohmmeter, _____.
the ohmmeter is connected in parallel to the circuit and the circuit is turned on
the ohmmeter is connected in series to the circuit and the circuit is turned on
the ohmmeter is connected in series to the circuit and the circuit is turned on
When connecting a conventional ammeter to a circuit, _____.
the circuit must turned on
the ammeter must be wired in series with the circuit
the anticipated load current must be less than the ammeter’s maximum current rating
All the answers are correct.
DMMs that can measure temperature use a _____ adapter that is placed on or near the object to be checked.
thermometer
thermocouple
refractometer
What is the best tool to use to find the cause of an intermittent problem in a low-voltage DC circuit
graphing multimeter
digital storage oscilloscope
digital voltmeter
The best method for testing wires and electrical connections is a(n) _____.
ohmmeter test
voltage drop test
inductive ammeter
The wiring harness for the SRS (air bag) circuit has a _____ harness cover
red
yellow
blue
The black DMM test lead always plugs into the COM input jack.
true
false
High resistance in a circuit causes decreased current flow.
true
false
A wiring diagram shows the actual position of parts on a vehicle.
true
false
How many volts are present in a fully charged 12-volt battery?
12
12.2
12.6
When load testing a battery, the load applied to the battery should be _____.
one half the CCA rating
the CCA rating
two times the CCA rating
What is the first step when removing an old battery?
Disconnect the positive cable
Remove the battery hold-down straps and cover
Inspect and clean the area
Battery overcharging may be caused by _____.
a faulty vehicle charging system
improper use of a battery charge
both answers are correct
While conducting a battery drain test, if the ammeter reads _____ or more amperes, there is excessive drain.
0.100
0.050
0.250
A cold-cranking amperes (CCA) rating specifies the minimum amperes available at _____ degrees Fahrenheit.
0
32
10
A battery is an electrochemical device that converts chemical energy into electrical energy.
true
false
Battery hold-downs reduce the amount of vibration and help increase the life of the battery.
true
false
Gassing is the conversion of the battery water into helium and nitrogen gas.
true
false
Lead acid type batteries cannot be recycled.
true
false
