CBSE Class 12 · 2005 · All India · ElectrostaticsVery Short Answer

Two electric field lines never cross each other. Why?

Answer: Because at the crossing point the field would have two directions at once, which is impossible.

Solution

The tangent to a field line gives the direction of

E

at that point. If two lines crossed, there would be two tangents, hence two directions of

E

at a single point, which cannot be. Therefore field lines never intersect.

CBSE Class 12 Board · 2005 · All India · Subjective

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