Assertion : Inside a conductor, electrons have no motion in the absence of some potential difference across it.
Reason : In the absence of potential difference no electrostatic force will act on the electrons inside the conductor.

Options

A. a.If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B. b .If both Assertion and Reason are true and Reason is not correct explanation of Assertion.
C. c.If Assertion is true but Reason is false.
D. d. If both Assertion and Reason are false.

Answer

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

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Inside a conductor, electrons have no motion in the absence of some potential difference across it."
- This is partially true. While it is correct that there is no net drift motion of electrons (drift velocity) in the absence of an electric field (or potential difference), electrons do have random thermal motion due to thermal energy.

2. **Understanding the Reason**:
- The reason states that "In the absence of potential difference, no electrostatic force will act on the electrons inside the conductor."
- This statement is false. Even without a potential difference, there are still forces acting on the electrons due to their interactions with other electrons and the atomic nuclei. Therefore, electrostatic forces can exist even in the absence of an external electric field.

3. **Evaluating the Truth of Assertion and Reason**:
- Since the assertion is misleading (as it implies no motion at all), it is considered false.
- The reason is also false because it incorrectly states that there are no electrostatic forces acting on the electrons.

4. **Conclusion**:
- Both the assertion and the reason are false. Thus, the correct option is that both the assertion and the reason are false.

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