Assertion (A): Semiconductors do not obey Ohm's law.
Reason (R ): V-I characteristic of semiconductors is linear.

Options

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is NOT the correct explanation of A
C. A is true but R is false
D. A is false and R is true

Explanation

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Understand the Assertion
The assertion states that "Semiconductors do not obey Ohm's law."
- Ohm's law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points, provided the temperature remains constant. Mathematically, it can be expressed as:
\[ I = \frac{V}{R} \]
where R is the resistance.

### Step 2: Analyze the V-I Characteristics of Semiconductors
The reason states that "V-I characteristic of semiconductors is linear."
- In reality, the V-I characteristics of semiconductors are not linear. Unlike ohmic conductors, semiconductors exhibit a non-linear relationship between voltage and current. This means that the current does not increase proportionally with voltage, especially at higher voltages.

### Step 3: Conclusion
Based on the analysis:
- The assertion is **true**: Semiconductors do not obey Ohm's law.
- The reason is **false**: The V-I characteristics of semiconductors are not linear.

### Final Answer
- Assertion (A) is true.
- Reason (R) is false.