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

Author Question: What is electric resistance? What characteristics of a wire determine its resistance? How does ... (Read 66 times)

clippers!

  • Hero Member
  • *****
  • Posts: 828
on: Jul 29, 2018
What is electric resistance? What characteristics of a wire determine its resistance? How does resistance normally vary with temperature?
 
  What will be an ideal response?

Question 2

Alternating current is normally produced by a
 
  A) battery.
  B) generator.
  C) both of these
  D) neither of these


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

SamMuagrove

  • Sr. Member
  • ****
  • Posts: 312
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: Electric resistance is the opposition a conductor offers to the migration of electrons. It depends on the wire material and dimensions of the wire. Resistance generally increases with increasing temperature. In some materials, called superconductors, resistance decreases to zero at critically low temperature.

Answer to Question 2

Answer: B


clippers!

  • Member
  • Posts: 828
Reply 2 on: Jul 29, 2018
Wow, this really help

ebonylittles

  • Member
  • Posts: 318
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto
Testing the Chemical Characteristics of Urine with Reagent Strips Testing the Chemical Characteristics of Urine with Reagent Strips
A typical air vane sensor with the cover removed. The movable arm contacts a carbon resistance path ... A typical air vane sensor with the cover removed. The movable arm contacts a carbon resistance path ...
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 ...
A spark tester connected to a spark plug wire or coil output. A typical spark tester will fire only ... A spark tester connected to a spark plug wire or coil output. A typical spark tester will fire only ...
Representative pedigrees for two characteristics, each followed through three generations Representative pedigrees for two characteristics, each followed through three generations
Video: Origin of organelles Animation

For a complete list of videos, visit our video library