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Answer the following questions. (i) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why is it so? (ii) Explain why two field lines never cross each other at any point.

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Answer

(i) An electrostatic field line is the path of movement of a positive test charge (q0 → 0)

A moving charge experiences a continuous force in an electrostatic field, so an electrostatic field line is always a continuous curve.

(ii) Two electric lines of force can never cross each other because if they cross, there will be two directions of the electric field at the point of intersection (say A); which is impossible.

An electrostatic field line is a continuous curve

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