Electronics > Beginners
relationship between V, I and R in graphical terms
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tautech:
brownt:
I think i have it then. are the comments correct on the graphs attached.

Basically the centre one is upside down, and all in all its a weird way to represent ohms law.

or are they all correct, but its just a weird way to explain it
agehall:
Your comment on the second graph is wrong.

Just do the math - U=I*R. Let's set U to 10 and see what happens:
With R=1 => I=10
With R=5 => I=2
With R=10 => I=1

Not exactly linear but since there are no units on the graph, you can assume it just shows you the general idea - as resistance increases, current has to go down to maintain a constant voltage.
hamster_nz:
If I recall the name correctly the graph of R vs current should be a 'hyperbola', not a line.

Any small section of it will look a linear relationship, but  R approaches infinity when current is 0, and current is 0 when R approaches infinity.

Shock:
Homework completed good job team.
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