Chapter 8, ELECTRICAL CONDUCTORS AND WIRE SIZES Video Solutions, Electricity 1: Devices, Circuits and Materials

Problem 1

Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided.
The resistance of a copper conductor is inversely proportional to the ___________________
a. CSA.
b. gauge numbers.
c. surrounding temperature.
d. current through the conductor.
e. length.

Check back soon!

01:28

Problem 2

Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided.
A conductor has a resistance of $6 \mathrm{ohms}$. A conductor of the same $\qquad$ material and length but twice the CSA will have a resistance of___________________
a. $1 / 3 \mathrm{ohm}$.
d. 6 ohms.
b. 2 ohms.
e. 12 ohms.
c. 3 ohms.

Shahab Ullah

Numerade Educator

03:07

Problem 3

Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided.
A conductor has a resistance of $10 \mathrm{ohms}$. A conductor of the ___________________ same material but twice the diameter will have a resistance of
a. $1 / 5 \mathrm{ohm}$.
d. 10 ohms.
b. 2.5 ohms.
e. 20 ohms.
c. 5 ohms.

Ajay Singhal

Numerade Educator

01:28

Problem 4

Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided.
A conductor has a resistance of $12 \mathrm{ohms}$. A second conductor ___________________ with the same material and CSA is four times as long, and has a resistance of
a. $1 / 3 \mathrm{ohm}$.
d. 12 ohms.
b. 3 ohms.
e. 48 ohms.
c. 6 ohms.

Shahab Ullah

Numerade Educator

Problem 5

Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided.
The CSA of wires is measured in___________________
a. mils.
b. circular mils.
c. mil-feet.
d. circular feet.
e. square inches.

Check back soon!

Problem 6

Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided.
By mathematically squaring the number of mils in the diameter of a wire, the result is the___________________
a. CSA.
d. mil-feet.
b. length.
e. conductance.
c. resistance.

Check back soon!

Problem 7

Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided.
The number of separate conductors in a raceway or cable is a major factor in determining the___________________
a. resistance of each conductor.
b. voltage of each conductor.
c. size of the conductors.
d. current-carrying capacity of the conductors.
e. temperature at which the conductors will melt.

Check back soon!

01:34

Problem 8

Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided.
The greatest portion of total circuit resistance is determined by the type of circuit arrangement and the___________________
a. internal resistance of the voltage source.
b. resistance of control components.
c. load resistance.
d. resistance of the wires.
e. resistance of switching components.

Brian Francisco

Numerade Educator

Problem 9

Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided.
The kind of insulation on a conductor partially determines the conductor's___________________
a. current-carrying capacity.
d. resistance.
b. CSA.
e. material.
c. gauge.

Check back soon!

08:04

Problem 10

Select the best answer for items 1 through 10 to make each statement true, and place the letter for the answer in the space provided.
The resistance of an aluminum wire is directly proportional to the___________________
a. CSA.
d. number of circuit
b. temperature of the wire. control components.
c. circular mils.
e. source voltage.

Vishal Gupta

Numerade Educator

01:18

Problem 11

Name the five factors that determine the total resistance of a circuit.
___________________________________________________________________

Mirza Aslam Beig

Numerade Educator

01:46

Problem 12

Name four factors that affect the resistance of a conductor.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________

Luis Rios

Numerade Educator

05:40

Problem 13

Find the CSA of a wire with a diameter of 17/1,000 inch.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________

Zachary Warner

Numerade Educator