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NCCER Electrical Module 26103-20 FINAL EXAM
STUDY GUIDE 2025/2026 COMPLETE QUESTIONS WITH
CORRECT DETAILED ANSWERS || 100%
GUARANTEED PASS <RECENT VERSION>
Voltage drop .....Answer.....The change in voltage across a
component that is caused by the current flowing through it and
the amount of resistance opposing it.
Voltmeter .....Answer.....An instrument for measuring voltage. The
resistance is fixed. When the voltmeter is connected to a circuit,
the current passing through the meter will be directly
proportional to the voltage at the connection points.
Amperes (A) .....Answer.....The basic unit of measurement for
electrical current, represented by the letter A.
,age 2 of 26
Volts (V) .....Answer.....The unit of measurement for voltage,
represented by the letter V. One volt is equivalent to the force
required to produce a current of one ampere through a
resistance of one ohm.
Voltage .....Answer.....the driving that makes current flow in a
circuit. Voltage, often represented by the letter E, is also
referred to as the electromotive force (EMF), difference of
potential , or electrical pressure.
Watts .....Answer.....The basic unit of measurement for electrical
power, represented by the letter W.
Coulomb .....Answer.....A unit of electrical charge equal to 6.25x
10^18. A coulomb is the common unit of quantity for specifying
the size of a given charge.
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Joule (J) .....Answer.....a unit of measurement for doing work,
represented by the letter J. One joule is equal to one newton-
meter (Nm).
Ohm's Law .....Answer.....A statement of the relationships among
current, voltage, and resistance in an electrical circuit: current (I)
equals voltage (E) divided by resistance (R). Generally
expressed as a mathematical formula: I=E/R
Resistors .....Answer.....Any devices in a circuit that resist the flow
of electrons.
Ammeter .....Answer.....an instrument for measuring electric
current in amperes.
Kilo .....Answer.....prefix meaning 1000 ex. one kilowatt is equal
to one thousand watts.
NCCER Electrical Module 26103-20 FINAL EXAM
STUDY GUIDE 2025/2026 COMPLETE QUESTIONS WITH
CORRECT DETAILED ANSWERS || 100%
GUARANTEED PASS <RECENT VERSION>
Voltage drop .....Answer.....The change in voltage across a
component that is caused by the current flowing through it and
the amount of resistance opposing it.
Voltmeter .....Answer.....An instrument for measuring voltage. The
resistance is fixed. When the voltmeter is connected to a circuit,
the current passing through the meter will be directly
proportional to the voltage at the connection points.
Amperes (A) .....Answer.....The basic unit of measurement for
electrical current, represented by the letter A.
,age 2 of 26
Volts (V) .....Answer.....The unit of measurement for voltage,
represented by the letter V. One volt is equivalent to the force
required to produce a current of one ampere through a
resistance of one ohm.
Voltage .....Answer.....the driving that makes current flow in a
circuit. Voltage, often represented by the letter E, is also
referred to as the electromotive force (EMF), difference of
potential , or electrical pressure.
Watts .....Answer.....The basic unit of measurement for electrical
power, represented by the letter W.
Coulomb .....Answer.....A unit of electrical charge equal to 6.25x
10^18. A coulomb is the common unit of quantity for specifying
the size of a given charge.
, age 3 of 26
Joule (J) .....Answer.....a unit of measurement for doing work,
represented by the letter J. One joule is equal to one newton-
meter (Nm).
Ohm's Law .....Answer.....A statement of the relationships among
current, voltage, and resistance in an electrical circuit: current (I)
equals voltage (E) divided by resistance (R). Generally
expressed as a mathematical formula: I=E/R
Resistors .....Answer.....Any devices in a circuit that resist the flow
of electrons.
Ammeter .....Answer.....an instrument for measuring electric
current in amperes.
Kilo .....Answer.....prefix meaning 1000 ex. one kilowatt is equal
to one thousand watts.
