Question

State the conditions under which ohm's law is not obeyed by a conductor.

Answer 1

$\bold{ANSWER}$

When a large current flows through a conductor for more time, then due to heat produced the conductor becomes hot, its length increases and area of cross section decreases so its resistance $\bold{increases}$ .

Due to change in physical conditions, the conductor becomes non-ohmic and the graph between V and I may not be a straight line.

$\bold{Thanks}$

Answer 2

under certain special reasons and conditions