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 43 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
:D TYSM

Kedrick2014

  • Member
  • Posts: 359
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Acquired resistance Acquired resistance
Electric Charges Electric Charges
A typical electric cooling fan assembly showing the radiator and related components. A typical electric cooling fan assembly showing the radiator and related components.
A potentiometer uses a movable contact to vary resistance and send an analog voltage to the PCM. A potentiometer uses a movable contact to vary resistance and send an analog voltage to the PCM.
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 ...
Steric interactions determine peptide conformation Steric interactions determine peptide conformation
Video: Diversity of Living Creatures - Charles Darwin & the Beagle's Voyage

For a complete list of videos, visit our video library