Characteristics of magnetic field lines.
Answers
Answer:
Magnetic fields can be pictorially represented by magnetic field lines, the properties of which are as follows:
The field is tangent to the magnetic field line.
Field strength is proportional to the line density.
Field lines cannot cross.
Field lines are continuous loops.
Explanation:
The direction of the magnetic field is tangent to the field line at any point in space. A small compass will point in the direction of the field line.
The strength of the field is proportional to the closeness of the lines. It is exactly proportional to the number of lines per unit area perpendicular to the lines (called the areal density).
Magnetic field lines can never cross, meaning that the field is unique at any point in space.
Magnetic field lines are continuous, forming closed loops without beginning or end. They go from the north pole to the south pole.
The last property is related to the fact that the north and south poles cannot be separated. It is a distinct difference from electric field lines, which begin and end on the positive and negative charges. If magnetic monopoles existed, then magnetic field lines would begin and end on them.