Question

If a resistor follows Ohm’s Law, what does the slope represent when you plot V as a function of I (with V on the y-axis)? What about when you plot I as a function of V (with I on the y-axis)?

Answer 1

Resistance

Conductance

Explanation:

In any graph the slope represents the ratio of y axis to x axis.

So, in the first case the voltage (V) is on the y axis and current (I) on the x axis. Here the slope is V/I = R. Therefore, slope represents resistance.

In the second case current (I) is on the y axis and voltage (V) is on the x axis. Here the slope formed will be I/V = 1/R = G. Therefore, slope represents conductance.