Which of the following figure represents the electronic field lines due to a combination of the one positive and one negative charge?

Options

A.
B.
C.
D.

Answer

To determine which figure represents the electric field lines due to a combination of one positive and one negative charge, we can follow these steps:

### Step 1: Understand Electric Field Lines
Electric field lines represent the direction of the electric field created by charges. For a positive charge, the electric field lines radiate outward, while for a negative charge, the lines point inward.

### Step 2: Analyze the Charges
We have one positive charge and one negative charge. The electric field lines will:
- Start from the positive charge and move outward.
- End at the negative charge, as the electric field lines indicate the direction a positive test charge would move.

### Step 3: Visualize the Field Lines
When both charges are present:
- The field lines from the positive charge will spread outwards.
- The field lines from the negative charge will curve inward towards the negative charge.

### Step 4: Identify the Correct Figure
We need to look for a figure that shows:
- Lines starting from the positive charge and moving outward.
- Lines terminating at the negative charge, showing the inward direction.

### Step 5: Eliminate Incorrect Options
- If a figure shows lines only going outward from both charges, it cannot represent the combination of a positive and a negative charge.
- If a figure shows lines only going inward, it also cannot represent the combination.

### Conclusion
The correct figure will show electric field lines that originate from the positive charge and curve towards the negative charge, indicating the attraction between the two.