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 83 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
YES! Correct, THANKS for helping me on my review

essyface1

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

An analogy for how cardiac output, resistance, and blood pressure are related. An analogy for how cardiac output, resistance, and blood pressure are related.
An R plasmid with resistance genes carried in a transposon An R plasmid with resistance genes carried in a transposon
A straightedge and a feeler gauge are being used to check that the oil pan has been correctly ... A straightedge and a feeler gauge are being used to check that the oil pan has been correctly ...
A technician-made adapter used to test exhaust system back pressure. A technician-made adapter used to test exhaust system back pressure.
If an injector has the specified resistance, this does not mean that it is okay. This injector had ... If an injector has the specified resistance, this does not mean that it is okay. This injector had ...
Using a gauge that measures vacuum in units of inches of water to test the vacuum at the dipstick ... Using a gauge that measures vacuum in units of inches of water to test the vacuum at the dipstick ...
Video: Control of ventilation rate by other brain centers (posts, hypothalamus & cerebral cortex)

For a complete list of videos, visit our video library