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Why I-V curve but not V-I curve

  • Thread starter KathC
  • Start date
  • #1
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Why we use I-V curve to show the characteristic of an electrical device but not V-I curve? I think the V-I one is clearer as the gradient would be resistance directly....

My teacher said there is a reason to use I-V, but she couldn't remenber.

Anyone knows?...Thx a lot....
 

Answers and Replies

  • #2
verty
Homework Helper
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I think it is because it is easy to control the voltage but not easy to control the current. The device responds to the voltage with a current profile. It doesn't respond to current by inducing a voltage.
 
  • #3
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I think it is because it is easy to control the voltage but not easy to control the current. The device responds to the voltage with a current profile. It doesn't respond to current by inducing a voltage.
Thanks! I think you're right...:)
 

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