Consider the following statements. Which of the statements given is correct?
Ohm's law is not applicable to electron tubes, discharge tubes, and electrolytes.
Ohm's law:
Ohm's law asserts that if all physical conditions and temperatures are unchanged, this same voltage across such a conductor is precisely proportional to the current flowing through all of it.
Mathematically, ohm's law can be represented as:
or,
or,
Here,
R is the resistance.
V is the voltage.
I is the current.
The circuit diagram is below:
Ohm's law states that the slope of a V-I graph is a straight line, as in the case of conductors. However, with semiconductors, the slope of the V-I graph is curving rather than straight, meaning that Ohm's rule does not apply.
Therefore, options B, C, and D are correct.