Question
1.7:
(a) An electrostatic field
line is a continuous curve. That is, a field line cannot have sudden breaks.
Why not?
(b) Explain why two field lines never
cross each other at any point?
Answer :
(a) An electrostatic
field line is a continuous curve because a charge experiences a continuous
force when traced in an electrostatic field. The field line cannot have sudden
breaks because the charge moves continuously and does not jump from one point
to the other.
(b) If two field lines
cross each other at a point, then electric field intensity will show two
directions at that point. This is not possible. Hence, two field lines never
cross each other.
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