This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Most telephone cables are made of copper wire of either 24 or 26 gauge. If the resistance of ... (Read 66 times)

waynest

  • Hero Member
  • *****
  • Posts: 553
on: Jul 28, 2018
Most telephone cables are made of copper wire of either 24 or 26 gauge. If the resistance of 24-gauge wire is 137 W/mile and the resistance of 26-gauge wire is 220 W/mile, what is the ratio of the diameter of 24-gauge wire to that of 26-gauge wire?
 a. 1.6
  b. 1.3
  c. 0.62
  d. 0.79
  e. 0.88

Question 2

A rod (length = 80 cm) with a rectangular cross section (1.5 mm  2.0 mm) has a resistance of 0.20 W. What is the resistivity of the material used to make the rod?
 a. 6.0  10-7 W  m
  b. 3.8  10-7 W  m
  c. 7.5  10-7 W  m
  d. 3.0  10-7 W  m
  e. 4.8  10-7 W  m


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

aloop

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

C


waynest

  • Member
  • Posts: 553
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

amit

  • Member
  • Posts: 364
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

A healthy diet is made up of well-balanced nutrients. A healthy diet is made up of well-balanced nutrients.
Use of combination therapy during tuberculosis therapy to avoid resistance. Use of combination therapy during tuberculosis therapy to avoid resistance.
A technician-made adapter used to test exhaust system back pressure. A technician-made adapter used to test exhaust system back pressure.
Checking the fuel pressure using a fuelpressure gauge connected to the Schrader valve. Checking the fuel pressure using a fuelpressure gauge connected to the Schrader valve.
Compression Test: Compression Gauge Compression Test: Compression Gauge
A tightrope walker walks across a 30-m long wire tied between two poles. The center of the wire ... A tightrope walker walks across a 30-m long wire tied between two poles. The center of the wire ...
Video: Parkinson's Disease

For a complete list of videos, visit our video library