Question Detail

Let's examine each characteristic:B. Magnetic field lines are always most concentrated where the magnetic field is strongest, which is typically at the poles of a magnet. This statement is true.C. Copper is a non-magnetic material (diamagnetic, but its effect on field lines is negligible compared to ferromagnetic materials), meaning magnetic field lines can easily pass through it. This statement is true.D. Magnetic field lines never intersect each other, as this would imply two different directions of the magnetic field at the same point, which is physically impossible. This statement is true.A. Outside a magnet, magnetic field lines are conventionally considered to emerge from the North pole and enter the South pole. Inside the magnet, they go from South to North. If the statement refers to the external field lines (which is the common convention when stating 'go from X to Y' without specifying 'inside'), then 'go from the South-pole to the North-pole of the magnet' is false. Since the question asks for the characteristic they DO NOT have, this is the incorrect statement based on the typical external field convention.