Assertion : An electrostatic field line never form closed loop.
Reason : Electrostatic field is a conservative field.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
C. If Assertion is true statement but Reason is false.
D. If both Assertion and Reason are false statements.

Answer

To analyze the given assertion and reason, we will break down the concepts step by step.

### Step 1: Understanding the Assertion
**Assertion**: An electrostatic field line never forms a closed loop.

- **Explanation**: Electrostatic field lines represent the direction of the electric field created by electric charges. They originate from positive charges and terminate at negative charges. Since electric field lines start from positive charges and end at negative charges, they cannot form closed loops. This is in contrast to magnetic field lines, which do form closed loops.

### Step 2: Understanding the Reason
**Reason**: The electrostatic field is a conservative field.

- **Explanation**: A conservative field is one where the work done in moving a charge around a closed path is zero. In electrostatics, the work done by the electric field on a charge when it is moved in a closed loop is always zero. This characteristic is due to the nature of electrostatic forces, which are conservative forces.

### Step 3: Linking the Assertion and Reason
- Since the electrostatic field is conservative, it implies that the electric field lines cannot form closed loops. If they did, it would mean that work done in moving a charge around that loop would not be zero, contradicting the definition of a conservative field.

### Conclusion
Both the assertion and the reason are true, and the reason correctly explains the assertion.

### Final Answer
Both the assertion and the reason are true, and the reason is the correct explanation of the assertion.

---