# How can we compare the strength of magnetic field in different region of magnetic field?

## How can we compare the strength of magnetic field in different region of magnetic field?

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.

## Is magnetic field strength same everywhere?

No, it is different everywhere.

How does the magnetic field strength change with distance?

1. If the distance between two magnets is doubled the magnetic force between them will fall to a quarter of the initial value.
2. If the distance between two magnets is halved the magnetic force between them will increase to four times the initial value.
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Where on earth is the strongest magnetic field?

poles
Intensity: The magnetic field also varies in strength over the earth’s surface. It is strongest at the poles and weakest at the equator.

### What is the strength of Earth magnetic field?

The strength of the field at the Earth’s surface ranges from less than 30 microteslas (0.3 gauss) in an area including most of South America and South Africa to over 60 microteslas (0.6 gauss) around the magnetic poles in northern Canada and south of Australia, and in part of Siberia.

### What is the strength of Earth’s magnetic field near the surface?

0.25 to 0.65 gauss
The magnitude of the Earth’s magnetic field at its surface ranges from 25 to 65 μT (0.25 to 0.65 gauss).

How does field strength vary with distance?

Electric field strength is location dependent, and its magnitude decreases as the distance from a location to the source increases. And by whatever factor the distance is changed, the electric field strength will change inversely by the square of that factor.

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What is the region of Earth’s magnetic field?

The magnetosphere
The magnetosphere is the region of space surrounding Earth where the dominant magnetic field is the magnetic field of Earth, rather than the magnetic field of interplanetary space. The magnetosphere is formed by the interaction of the solar wind with Earth’s magnetic field.