The magnetic field of a bar magnet is strongest
at either pole of the magnet
. It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.
At which two places on the earth is its magnetic field the strongest?
Intensity: The magnetic field also varies in strength over the earth’s surface. It is strongest at
the poles
and weakest at the equator.
At which location is the magnetic field the strongest?
The strongest external magnetic fields are
near the poles
. A magnetic north pole will attract the south pole of another magnet, and repel a north pole.
What magnetic field is the strongest?
The magnetic field of a bar magnet is
strongest at either pole of the magnet
. It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.
Is Earth a magnet?
In a sense,
yes
. The crust of the Earth has some permanent magnetization, and the Earth’s core generates its own magnetic field, sustaining the main part of the field we measure at the surface. … So we could say that the Earth is, therefore, a “magnet.”
What is the earth’s magnetic field called?
The Earth’s Main Field dominates over the interplanetary magnetic field in the area called
the magnetosphere
. The magnetosphere is shaped somewhat like a comet in response to the dynamic pressure of the solar wind.
What is the weakest magnet in the world?
The north pole of one magnet attracts the south pole of another magnet.
A bar magnet
is considered as the weakest magnets because the poles have the smallest area.
Do magnets affect flames?
The
magnetic field enhances combustion process
between fuels, which are diamagnetic material and oxygen which is paramagnetic material. … When pyrex tube fixed around the candle with lack of oxygen, candle flame quenched after 10 seconds. In the prescnce of magnetic field, candle flame life increased to 22 seconds.
Can Earth lose its magnetic field?
Earth’s magnetic field is vital to life on our planet. … Over the last 200 years, the
magnetic field has lost around 9% of its strength on a global average
. A large region of reduced magnetic intensity has developed between Africa and South America and is known as the South Atlantic Anomaly
Why Earth is a giant magnet?
Earth’s magnetic field is mostly caused by electric currents in the liquid outer core
, which is composed of conductive, molten iron. From afar, the Earth looks like a big magnet with a north and south pole like any other magnet. …
Who said Earth is a magnet?
Then in 1600
William Gilbert
Why did Mars lose its magnetic field?
For years, scientists believed that this field disappeared over 4 billion years ago, causing Mars’ atmosphere to be slowly stripped away by solar wind. … Like Earth, Mars global magnetic field is believed to have been the
result of a dynamo effect caused by action in its core
.
How much force is a Tesla?
1×10
4
G. The tesla (symbol: T) is a derived unit of the magnetic B-field strength (also, magnetic flux density) in the International System of Units.
One tesla is equal to one weber per square metre
.
What causes a magnetic field?
Magnetism is caused
by the motion of electric charges
. Every substance is made up of tiny units called atoms. Each atom has electrons, particles that carry electric charges. … Their movement generates an electric current and causes each electron to act like a microscopic magnet.
Does magnets affect human body?
Generally speaking, magnets below 3000 Gauss (magnetic field unit) are basically harmless to the human body, while
magnets with magnetic field strength above 3000 Gauss are harmful to the human body
. … Although some magnets are harmful to humans, this negative effect is also negligible.
Which is a natural magnet?
Magnetite, also known as lodestone
, is a naturally occurring rock that is a magnet. This natural magnet was first discovered in a region known as magnesia and was named after the area in which it was discovered.
