Magnetic lines of force never intersect each other. The tangent to a magnetic line of force at any given point is the direction where a charge placed at that point will move to. If magnetic lines of force intersect, a charge placed at the intersection point will have to move in two different directions. It is therefore not possible for magnetic lines of force to intersect.

pass through even non-magnetic materials.

run from the north pole to the south pole. 

are in a state of tension and tend to be shorted.

Which of the following statements about magnetic lines of force is not correct? They 