Which of the following figure represents the electric field lines due to a single positive charge?

Options

A.
B.
C.
D.

Explanation

To determine which figure represents the electric field lines due to a single positive charge, we need to understand the characteristics of electric field lines generated by such a charge.

### Step-by-Step Solution:

1. **Understanding Electric Field Lines**: Electric field lines represent the direction and strength of the electric field created by a charge. For a positive charge, these lines indicate the direction in which a positive test charge would move if placed in the field.

2. **Direction of Electric Field Lines**: Electric field lines emanate radially outward from a positive charge. This means that the lines should start from the charge and extend outward in all directions.

3. **Analyzing the Options**:
- **Option A**: Check if the lines are radiating outward from a central point. If they are, this could represent the electric field of a positive charge.
- **Option B**: Look for converging lines. If the lines are converging, this indicates the presence of a negative charge, which is not what we want for a positive charge.
- **Option C**: Check for parallel lines. Parallel lines suggest a uniform electric field, which does not represent a point charge.
- **Option D**: Similar to Option C, if the lines are parallel, they cannot represent a point charge.

4. **Conclusion**: After analyzing the options, we find that:
- **Option A** is the only one where the lines are radiating outward from a single point, indicating the presence of a positive charge.
- **Options B, C, and D** are incorrect because they either converge or are parallel, which do not represent the electric field of a positive charge.

### Final Answer:
The figure that represents the electric field lines due to a single positive charge is **Option A**.

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