Why I-V curve but not V-I curve

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The discussion centers on the preference for using I-V curves over V-I curves to characterize electrical devices. Participants agree that controlling voltage is generally easier than controlling current, which influences the choice of curve. The I-V curve effectively shows how a device responds to applied voltage with a corresponding current profile. In contrast, devices do not typically respond to current by generating a specific voltage. Overall, the I-V curve is favored for its practicality in analyzing electrical behavior.
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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...
 
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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.
 
vertigo said:
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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