Question

If field lines of a magnetic field are crossed at a point, what does it indicate ?

Updated on May 31, 2025 | By Learnzy Admin | 👁️ Views: 347 students

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Solution

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What Are Magnetic Field Lines?

Magnetic field lines are imaginary lines used to show the direction and strength of a magnetic field. They help us visualize how the magnetic force behaves around a magnet.

They go from the north pole to the south pole outside the magnet.
The closer the lines are, the stronger the magnetic field.
A compass needle placed in the field lines will point along the direction of the field.

What Happens if Field Lines Cross?

If two magnetic field lines crossed at a point, it would mean that at that point:

The magnetic field has two different directions at the same time.
But this is not physically possible.
A magnetic field at any given point can only have one unique direction.

Why Magnetic Field Lines Never Cross

Field lines represent the path a compass needle would follow.
A compass needle always points in just one direction.
So, only one field line can pass through a point — otherwise the compass would be confused and try to point in two directions, which it can't do.

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