Introduction to Electrical Wiring Exam Questions and Correct Answers Latest Update 2024-2025
AC - Answers current changes directions
DC - Answers current goes in a single direction, negative to positive
Power Supply - Answers source of energy
Output Device - Answers produces desired work, aka load
Input Device - Answers controls flow of current
Conductor - Answers provides path for current to flow
Most Common Conductor - Answers copper
Voltage - Answers force that drives electrons, measured in volts (represented by V or E in formulas)
Current - Answers movement or flow of electrons, number of electrons flowing through conductor,
measured in amperes (electrons per second, represented by I or A)
Resistance - Answers opposition to flow of electricity, measured in ohms (represented by omega)
Power - Answers measure of electricity consume, measured in watts (represented by W), and calculated
by voltage X current
First Rule of Safety - Answers dress appropriately
Water - Answers decreases resistance between body and ground
UL - Answers Underwriters Labratories, recognized testing agency
NEC - Answers National Electric Code, sets standards for wiring and equipment installation in US
CSA - Answers Canadian Standards Association, establishes safety standards
IEC - Answers International Electrotechnical Commission, product safety standards in many countries
Listed Components - Answers components certified in safety
Wire Stripping Tool - Answers cuts insulation from wires
Diagonal Cutters - Answers used by experienced electricians
Electrician's Knife - Answers electricians can carefully cut away insulation at a 30 degree angle
Screw Terminals - Answers Type A a lug is connected to a screw which is tightened, Type B is when wire
is inserted into terminal and screw is tightened down
Internal Clamps - Answers stripped end of wire is inserted into slot and device fastens around wire
AC - Answers current changes directions
DC - Answers current goes in a single direction, negative to positive
Power Supply - Answers source of energy
Output Device - Answers produces desired work, aka load
Input Device - Answers controls flow of current
Conductor - Answers provides path for current to flow
Most Common Conductor - Answers copper
Voltage - Answers force that drives electrons, measured in volts (represented by V or E in formulas)
Current - Answers movement or flow of electrons, number of electrons flowing through conductor,
measured in amperes (electrons per second, represented by I or A)
Resistance - Answers opposition to flow of electricity, measured in ohms (represented by omega)
Power - Answers measure of electricity consume, measured in watts (represented by W), and calculated
by voltage X current
First Rule of Safety - Answers dress appropriately
Water - Answers decreases resistance between body and ground
UL - Answers Underwriters Labratories, recognized testing agency
NEC - Answers National Electric Code, sets standards for wiring and equipment installation in US
CSA - Answers Canadian Standards Association, establishes safety standards
IEC - Answers International Electrotechnical Commission, product safety standards in many countries
Listed Components - Answers components certified in safety
Wire Stripping Tool - Answers cuts insulation from wires
Diagonal Cutters - Answers used by experienced electricians
Electrician's Knife - Answers electricians can carefully cut away insulation at a 30 degree angle
Screw Terminals - Answers Type A a lug is connected to a screw which is tightened, Type B is when wire
is inserted into terminal and screw is tightened down
Internal Clamps - Answers stripped end of wire is inserted into slot and device fastens around wire
