Will semiconductors obeys the ohms law?

Answer 1

Yes and no. At any instant they follow ohm's la. However as they are nonlinear, as signals change they deviate from the standard ohm's law that passive components follow at all times.

Another Answer

For Ohm's Law to apply, the ratio of a conductor's (or device's) voltage to resistance MUST be constant for variations in voltage. In other words, if you plotted current against voltage, for variations in voltage, then the result MUST be a straight line. Ohm's Law does not apply at a particular instant.

Hardly any material or device obeys Ohm's Law, because most produce curved lines. Transistors do not obey Ohm's Law and is described as being 'non-linear' or 'non-ohmic'.

The equation, R = V/I, widely regarded as being 'Ohm's Law' is derived, NOT from Ohm's Law, but from the definition of the ohm.

There seems hardly any credible reason to continue teaching 'Ohm's Law' as a 'law', as it applies to so few materials.

Answer 2

Very few conductors or electronic components actually obey Ohm's Law, because Ohm's Law is not a universal law -i.e. one that applies in all circumstances.

For Ohm's Law to apply, the ratio of voltage to current must be constant for variations in voltage. In other words, if we plotted a graph of current against increasing values of voltage, it must be a straight line.

Very few materials achieve this linear relationship.

If you look at the voltage/current characteristic curves for semiconducting devices, they are generally curved, although they may also have linear parts. For the linear parts, Ohm's Law applies, but for the curved parts, Ohm's Law doesn't apply.