Or V=R×I
R=V/I
V=Potential differnce
I=Current
R=Resistance (which is a constant)
ohm’s law is represented by a graph:-
Here question arises what is a Resistance. So,
let’s do a question on resistance:-
The potential difference between two points of a wire carrying a 2 amperes current is 0.1 volt. calculate the resistance between these points?
solution:-
from ohm’s law we have:
Potential difference/Current=Resistance
or
V/I=R
Here, Potential difference,V=0.1 Volt
Current,I=2 Amperes
Resistance,R=?
putting these values in the above formula, we get:
0.1/2=R
0.05=R
or Resistance,R=0.05 ohm or (0.05 Ω).