# What causes magnetic field lines?

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All moving charged particles produce magnetic fields. … Magnetic field lines form in concentric circles around a cylindrical current-carrying conductor, such as a length of wire.

## What causes a magnetic field?

When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field. The piece of iron has become a magnet. Some substances can be magnetized by an electric current.

## What does magnetic field lines indicate?

Magnetic field lines are a visual tool used to represent magnetic fields. They describe the direction of the magnetic force on a north monopole at any given position. The density of the lines indicates the magnitude of the field. Taking an instance, the magnetic field is stronger and crowded near the poles of a magnet.

## Why are the magnetic field lines closed?

Since the direction of magnetic field line is the direction of force on a north pole. So the magnetic lines always begin from the ‘N’ pole of the magnet and end on the ‘S’ pole of the magnet. … Thus the magnetic field lines are closed.

## Are magnetic field lines real?

4 Answers. The electric and magnetic fields are real things: they can store energy and transfer momentum. “Field lines” or “lines of force” are a visualization tool suitable for drawing vector fields. They are maps of the fields and the fields are real things.

## How Earth magnetic field is created?

The Earth’s magnetic field is generated in the fluid outer core by a self-exciting dynamo process. Electrical currents flowing in the slowly moving molten iron generate the magnetic field.

## Which is stronger magnetic field or electric field?

The way in which charges and currents interact with the electromagnetic field is described by Maxwell’s equations and the Lorentz force law. The force created by the electric field is much stronger than the force created by the magnetic field.

## What does magnetic field do for Earth?

The Earth’s magnetic field serves to deflect most of the solar wind, whose charged particles would otherwise strip away the ozone layer that protects the Earth from harmful ultraviolet radiation. One stripping mechanism is for gas to be caught in bubbles of magnetic field, which are ripped off by solar winds.

## Why do magnetic lines of force move from north to south?

When it comes to magnets, opposites attract. This fact means that the north end of a magnet in a compass is attracted to the south magnetic pole, which lies close to the geographic north pole. Magnetic field lines outside of a permanent magnet always run from the north magnetic pole to the south magnetic pole.

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## Which property of the magnetic field lines is wrong?

Solution : (a) Wrong, because magnetic lines of force never emanate from a single point as shown. The field lines shown represent electric field of a single positive charge.

## Where is the magnetic field the strongest?

The magnetic field is strongest at the center and weakest between the two poles just outside the bar magnet. The magnetic field lines are least dense at the center and densest between the two poles just outside the bar magnet.

## Are electric field lines closed curves?

The electric field lines can never form closed loops, as line can never start and end on the same charge. These field lines always flow from higher potential to lower potential.

## Why can’t two magnetic field lines cross each other?

Two magnetic field lines do not intersect each other because if there was point of intersection, The compass needle would point towards 2 directions. Which means that the magnetic field has two different directions, which is not possible.4 мая 2020 г.

## Can we use the Earth’s magnetic field to generate electricity?

Earth’s magnetic field is very weak, so you would get very little current from your generator. … They have magnetic fields around 6,000 times stronger than Earth’s magnetic field. Magnetic fields inside electrical generators are similar to this.19 мая 2019 г.

## Do field lines exist?

No, they do not exist. Electric field lines are only imaginary. They are the paths along which an imaginary unit charge would move when free. Their number is infinite as paths (Electric field lines) can be infinite.

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