Pick out the statement which is incorrect?

Options

A. A negative test charge experiences a force opposite to the direction of the field
B. The tangent drawn to a line of force represents the direction of electric field
C. Field lines never intersect
D. The electric field lines form closed loop

Answer

To determine which statement is incorrect among the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Analyze Option 1:**
- Statement: "A negative test charge experiences force opposite in the direction of the field."
- Explanation: In an electric field, a positive charge experiences a force in the direction of the field, while a negative charge experiences a force in the opposite direction. Therefore, this statement is **correct**.

2. **Analyze Option 2:**
- Statement: "A tangent drawn to a line of force represents the direction of the electric field."
- Explanation: Electric field lines represent the direction of the electric field. A tangent drawn at any point on an electric field line indicates the direction of the electric field at that point. Thus, this statement is **correct**.

3. **Analyze Option 3:**
- Statement: "Field lines never intersect each other."
- Explanation: If two field lines were to intersect, it would imply that at the intersection point, there are two different directions of the electric field, which is not possible. Therefore, this statement is **correct**.

4. **Analyze Option 4:**
- Statement: "Electric field lines form a closed loop."
- Explanation: Electric field lines originate from positive charges and terminate on negative charges. They do not form closed loops; they start from positive and end at negative charges. Thus, this statement is **incorrect**.

### Conclusion:
The incorrect statement is **Option 4: "Electric field lines form a closed loop."**

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