JAMB - Physics (1978 - No. 28)
Why is it impossible for the lines of force of an electric field to cross one another?
like charges repel each other
a charged particle is deflected by an eletric field
like charges are arranged on the same line of force
a positively charged particle can travel in only one direction at any time
none of these is correct
Explanation
Electric field lines do not intersect each other because if they do, then the field at the point of intersection will not have a unique direction.
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