Resistance from V-I graph

  • Thread starter Cici2017
  • Start date
  • #1
Cici2017

Homework Statement


Is the resistance equal to V/I at any point, or is it the gradient at that point? And Why?

Homework Equations




The Attempt at a Solution


shouldn't it be the gradient? because it is change in V over change in I?

Thanks~
 

Answers and Replies

  • #2
cnh1995
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shouldn't it be the gradient? because it is change in V over change in I?
Yes, it's the gradient. But for ohmic materials (linear resistances), the gradient is same as V/I.
Can you say why?
 
  • #3
Cici2017
Yes, it's the gradient. But for ohmic materials (linear resistances), the gradient is same as V/I.
Can you say why?
Yes =) Thanks for making it clear :blushing:
 

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