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## Axis question for electricity experiment question.

In an experiment to demonstarte relationship between current and p.d. in an electrilyte the book says to plot current on the Y axis. Why is this?

V = IR
R = V/I

I always assumed when you plot graphs, the slope must equal the constant.

Any input appreciated.
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 Quote by Darth Frodo In an experiment to demonstarte relationship between current and p.d. in an electrilyte the book says to plot current on the Y axis. Why is this? V = IR R = V/I I always assumed when you plot graphs, the slope must equal the constant. Any input appreciated.
It's not an unbreakable rule, merely a convenience and convention. If it bothers you, consider that Conductance (G, in Siemens) is the reciprocal of Resistance (R, in Ohms). Thus I = V*G.