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Author Question: What is electric resistance? What characteristics of a wire determine its resistance? How does ... (Read 72 times)

clippers!

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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


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SamMuagrove

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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!

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

scottmt

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Reply 3 on: Yesterday
Gracias!

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