Electric lines of forces -

Options

A. Exist everywhere
B. Are imaginary
C. Exist only in the immediate vicinity of electric charges
D. None of the above

Answer

### Step-by-Step Solution:

1. **Understanding Electric Lines of Force**:
Electric lines of force are a conceptual tool used to visualize the electric field around charged objects. They represent the direction and strength of the electric field.

2. **Imaginary Nature**:
It is important to note that these lines are not physical entities; they are imaginary lines that help us understand how electric fields behave. They do not exist in reality but are a useful way to represent electric fields.

3. **Behavior Inside Conductors**:
Inside a conductor in electrostatic equilibrium, the electric field is zero. This means that there are no electric lines of force present within the conductor itself.

4. **Existence Near Charges**:
Electric lines of force exist in the space surrounding electric charges. They originate from positive charges and terminate at negative charges, indicating the direction a positive test charge would move in the electric field.

5. **Conclusion**:
Based on the above points, we can conclude that electric lines of force are indeed imaginary and serve as a representation of the electric field around charged objects.

### Final Answer:
Electric lines of force are imaginary lines used to represent electric fields, existing only in the vicinity of electric charges.

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