The wrong statement about electric lines of force is

Options

A. These originate from positive charge and end on negative charge
B. They do not intersect each other at a point
C. They have the same form for a point charge and a sphere
D. They have physical existence

Answer

To determine the wrong statement about electric lines of force, we will analyze each of the given options step by step.

### Step 1: Analyze Option 1
**Statement:** Electric lines of force originate from positive charge and terminate at negative charge.

**Analysis:** This statement is true. Electric field lines are drawn to indicate the direction of the electric field, which originates from positive charges and ends at negative charges.

### Step 2: Analyze Option 2
**Statement:** Electric lines of force do not intersect each other at a point.

**Analysis:** This statement is also true. Electric field lines cannot intersect because if they did, it would imply that at the point of intersection, there would be two different directions of the electric field, which is not possible.

### Step 3: Analyze Option 3
**Statement:** Electric lines of force have the same form for a point charge and a sphere.

**Analysis:** This statement is true as well. For a point charge, the electric field lines radiate outward uniformly in all directions. For a uniformly charged sphere, the electric field outside the sphere behaves as if all the charge were concentrated at the center, and the field lines are similar to those of a point charge.

### Step 4: Analyze Option 4
**Statement:** Electric lines of force have physical existence.

**Analysis:** This statement is false. Electric lines of force are a conceptual tool used to visualize electric fields. They do not have a physical existence; we cannot see them, but we can observe their effects through the behavior of charges in an electric field.

### Conclusion
The wrong statement about electric lines of force is **Option 4: They have physical existence.**

---