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# AS Physics Question - Help! Watch

1. Why does a graph of current against resistance look like this:

I know current is inversely related to resistance but why does it curve the way it does?
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(Original post by Puddles the Monkey)
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3. (Original post by Timlong365)
Why does a graph of current against resistance look like this:

I know current is inversely related to resistance but why does it curve the way it does?
V=IR
The curve is an effect of the inverse relationship, where if V is constant, I is proportional to 1/R (or R is proportional to 1/I). It is just the general shape of an x=1/y kind of graph.
Whereas if you have V against either I or R, it would be a straight line because V is proportional to I and V is proportional to R, provided that the other value is constant.

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