The
current flowing through a conductor is directly proportional
to the potential difference across the ends of the conductor
and inversely proportional to its resistance.
If V is the potential difference across the ends
of a conductor, R is its resistance and I is the current
passing through it then as per the Ohm’s law
I α V/R
or I = V/R
or V = IR
Where I is
the current in Amperes, V potential difference is volts and
R is the resistance of the conductor in ohms.
Limitations:
1.
It can not
be applied to the circuits containing transistors.
2.
It is not
applicable for the circuits containing non linear such as
electric arc and powdered carbon etc.
