Question

Why did Georg Simon Ohm claim that the constant of proportionality between potential difference(V) and current(I) is resistance?
That is, V ∝ I [By Ohm's law]
=> V = IR
Why is R resistance? Why can't it be defined as the conductance of the material?

Answer 1

Dear Student,
According to Ohm's law at constant temperature current flowing through a conductor is directly proportional to the potential difference across it. i. I α V
or we can also write V α I
When a graph is plotted between V and I it it observed that the slop of the graph remains constant and this constant depends upon the nature of the conductor i.e. the length, area of cross section and its material and they named it as resistance.
Regards