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

Author Question: What is the resistance of 1 000 m of 4-mm diameter copper wire? (Cu = 1.7 10-8 / ... (Read 55 times)

future617RT

  • Hero Member
  • *****
  • Posts: 543
on: Jul 28, 2018
What is the resistance of 1 000 m of 4-mm diameter copper wire? (Cu = 1.7  10-8  / m)

Question 2

A high-resistance material is used as an insulator between the conductors of a length of coaxial cable. The resistance material, which forms a hollow tube, has an inner radius a and an outer radius b, and the insulator provides a resistance R between the conductors. If a second insulator, made of the same material and having the same length, is made with double both the inner radius and the outer radius of the first, what resistance would it provide between the conductors?
 a. R
  b. 2 R
  c. 4 R
  d. (ln2)R
  e. R/(ln2)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Joc

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jul 28, 2018
Answer to Question 1

1.35 ohm

Answer to Question 2

a


future617RT

  • Hero Member
  • *****
  • Posts: 543
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


Joc

  • Sr. Member
  • ****
  • Posts: 317
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Systemic acquired resistance to pathogen attack. Systemic acquired resistance to pathogen attack.
Measuring the resistance of an HEI pickup coil using a digital multimeter set to the ohms position. ... Measuring the resistance of an HEI pickup coil using a digital multimeter set to the ohms position. ...
This five-wire mass air flow sensor consists of a metal foil sensing unit, an intake air temperature ... This five-wire mass air flow sensor consists of a metal foil sensing unit, an intake air temperature ...
The sensing wire in a typical hot wire mass air flow sensor. The sensing wire in a typical hot wire mass air flow sensor.
An aluminum wire has a length of 27.0 m and a resistance of 2.90 n at 20.00C. As An aluminum wire has a length of 27.0 m and a resistance of 2.90 n at 20.00C. As
A wheel of diameter 0.70 m rolls on the floor without slipping. A point at the top of the wheel ... A wheel of diameter 0.70 m rolls on the floor without slipping. A point at the top of the wheel ...
Video: Regulation of GFR: autoregulation via tubuloglomerular feedback, neural & hormonal regulation

For a complete list of videos, visit our video library