Assertion : Ohm's law is applicable for all conducting elements.
Reason : Ohm's law is a fundamental law.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reasonb is false
D. If both assertion and reason are false.

Explanation

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

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Ohm's law is applicable for all conducting elements."
- Ohm's law is defined as \( V = I \times R \), where \( V \) is the voltage, \( I \) is the current, and \( R \) is the resistance.
- However, Ohm's law is not applicable to all conducting elements. It is primarily valid for ohmic conductors (like metals) under constant temperature conditions. It does not hold true for non-ohmic conductors such as semiconductors, superconductors, and diodes.

2. **Understanding the Reason**:
- The reason states that "Ohm's law is a fundamental law."
- While Ohm's law is a well-known principle in electronics, it is not a fundamental law of nature. It is more accurately described as an empirical relationship that applies under certain conditions (specifically for ohmic materials).

3. **Evaluating Both Statements**:
- Since the assertion is incorrect (Ohm's law does not apply to all conducting elements), and the reason is also incorrect (Ohm's law is not a fundamental law), we conclude that both the assertion and the reason are false.

4. **Conclusion**:
- Therefore, the correct answer to the question is that both the assertion and the reason are false.

### Final Answer:
Both the assertion and the reason are false.