Question

A semiconductor is a device that obeys Ohm's law. (T/F)

Hint:

Semiconductors do not obey Ohm’s law because their resistance depends on temperature, doping, and applied voltage.

Answer 1

Step 1: Understanding Ohm's law.
Ohm's law states that the current through a conductor is directly proportional to the voltage across it, and inversely proportional to the resistance. For a material to obey Ohm's law, its resistance must remain constant as the current and voltage vary.
Step 2: Behavior of semiconductors.
Semiconductors do not always obey Ohm’s law. The resistance of semiconductors depends on the temperature and the applied voltage. When a semiconductor is doped (either n-type or p-type), its resistance can change, making its behavior non-linear. As a result, semiconductors have a current-voltage relationship that does not follow Ohm's law.
Step 3: Conclusion.
Thus, a semiconductor does not obey Ohm's law in all cases, making the statement false.