Electrical Wiring Chapter 16 Exam Questions and Correct Answers Latest Update Already Passed
What is the relationship among voltage, current, and resistance? - Answers Voltage (V) is the power or the pressure of electricity. Current (I) is the flow of electrons. Resistance (R) is the restriction...
What is the relationship among voltage, current, and resistance? - Answers Voltage (V) is the power or
the pressure of electricity. Current (I) is the flow of electrons. Resistance (R) is the restriction to the flow
of electrons. They can be related using the equation V=IR.
What are the differences between a neutral wire and a grounding wire? - Answers A neutral wire acts as
a return path to complete an electrical circuit. A grounding wire is a safety device that acts as a route to
the ground for electricity if a short circuit occurs.
What is the path of electricity from the municipal power supply at the street to a light bulb in a house?
Use specific terms for all the cables and devices through which electricity flows. - Answers The electricity
is carried through a hot wire in the following order:
-Municipal power supply
-Meter base
-Main panel
-Circuit
-Light switch
-Light bulb
What are the steps involved in rough wiring a house? Discuss why each step is in its particular sequence.
- Answers 1. Setting the boxes, including the main panel box, is the first step because the cables connect
to them.
2. Running the cables in between the boxes is the second step because they need to be the proper
length before finishing the boxes.
3. Making up the boxes is the third step because it allows all of the connections of the cables to be made
and the wires to be put into place.
4. The rough-in inspection is the final step to make sure the work is correct and safe.
What are the typical wiring sized used in residential construction? For what purpose is each employed? -
Answers In residential construction, 18- and 16-gauge wires are used for low-voltage wiring. 14-, 12-,
and 10-gauge wires are used for common lighting, receptacle, and appliance circuits. Larger gauges are
used for service entrances or major equipment and appliances.
Explain the differences between line voltage and low-voltage systems. Make a list of typical uses of low
voltage systems. - Answers Line voltage systems, around 120 volts, are used for residential wiring
including common lighting, receptacles, or appliances, and they must be installed by an electrician. Low-
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