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 143 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?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

An analogy for how cardiac output, resistance, and blood pressure are related. An analogy for how cardiac output, resistance, and blood pressure are related.
copper copper
copper copper
Marianne Nicholson, Kwakwaka'wakw pictograph of a copper on a cliff near Kingcome. Marianne Nicholson, Kwakwaka'wakw pictograph of a copper on a cliff near Kingcome.
A downward-sloping spark line usually indicates high secondary ignition system resistance or an ... A downward-sloping spark line usually indicates high secondary ignition system resistance or an ...
Copper Mine, Utah Copper Mine, Utah
Video: Premenstrual Syndrome

For a complete list of videos, visit our video library