magnetic effects of electric current — Science STD 10 — Question
Gujarat BoardEnglish MediumSTD 10Sciencemagnetic effects of electric current2 Marks
Question
Why don’t two magnetic field lines intersect each other?
✓
Answer
The direction of the magnetic field $B$ at a point is obtained by drawing a tangent to the magnetic field line at that point.
If two magnetic field lines intersect each other, it would mean that there are two directions of the magnetic field at the point of intersection, which is not possible because magnetic field is a vector, at a given point in space, it can have only one direction.
(or the resultant force on a pole (north/south) at any point can only be in one direction.)
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.