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What happen to the magnetic flux when it passes through a ferro-magnetic substance?
When magnetic flux passes through a ferromagnetic substance, the substance can become significantly magnetized. This is due to alignment of magnetic domains within the material, enhancing the overall magnetic effect. Ferromagnetic materials have a high magnetic permeability compared to non-magnetic materials, allowing them to concentrate magnetic lines of force.
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What three things can happen to light when it encounters a substance?
Light can be absorbed by the substance, reflected off the substance, or transmitted through the substance.
What must happen for an electromagnet to have a magnetic field?
An electromagnet must have a current flowing through its coil of wire in order to generate a magnetic field. When an electric current passes through the coil, it creates a magnetic field around the electromagnet.
What can happen to sound energy travelling through the air when it meets a new substance?
When sound energy meets a new substance, three things can happen: reflection (bouncing off the substance), absorption (being absorbed by the substance and converted into another form of energy), or transmission (passing through the substance). The extent to which each of these occur depends on the properties of the substance and the frequency of the sound wave.
What will happen to the electromagnet if the current stops?
If the current stops flowing through an electromagnet, the magnetic field that was being generated will also disappear. This will cause the electromagnet to lose its magnetic properties and no longer attract or repel magnetic materials.
Why does a magnet work?
Basically, all electrons are naturally little magnets. They produce an electromagnetic field. We won't worry too much about how and why this happens, just take it as given that it does happen. This property of electrons is, for historical reasons, called "spin".In most materials, the electrons get "paired up": One having a "spin up" will get paired with one having a "spin down", so their magnetic fields cancel out within a single atom or molecule.However, some materials are ferromagnetic. They have lots of unpaired electrons, so their spins don't cancel out on an atomic level. They may still cancel out with the atom next to them... this is why most iron bars (iron is a ferromagnetic material, and the word "ferromagnetic" actually comes from the Latin word for iron, ferrum) are not magnets: each tiny iron atom has its individual magnetic field pointing in a different direction, so that for every one that's pointing west there's another one pointed east and for every up there's a down and for every south there's a north and so on.If you can get all the atoms to "line up" with their tiny magnetic fields all pointing the same direction, you get a permanent magnet, like the little toy magnets you can buy.You can also temporarily make them line up using electricity. An electric current in a coil of wire makes a magnetic field, but if you put a ferromagnetic substance in the center of the coil, it intensifies the field, and you get an electromagnet.Even if a ferromagnetic material isn't a magnet itself, it's still attracted by other magnets. This is why you can stick a magnet on your (steel) refrigerator, or use one to pick up (iron) nails.
What happen if the iron core is replaced by gold in the case of transformer?
You will have a very expensive but worthless transformer. Gold is not a ferromagnetic material, so it will not contain the magnetic flux needed to link the separate windings.
What three things can happen to light when it encounters a substance?
Light can be absorbed by the substance, reflected off the substance, or transmitted through the substance.
What will happen to a piece of aluminium when a magnet comes near it?
When a magnet comes near a piece of aluminum, there will be no significant magnetic attraction or repulsion, as aluminum is a non-ferromagnetic material. It does not have a permanent magnetic field and does not respond to magnetic fields in the same way that ferrous materials do. However, a strong magnet may induce a very weak magnetic field in aluminum, leading to a slight interaction, but it will not stick to the magnet.
What must happen for an electromagnet to have a magnetic field?
An electromagnet must have a current flowing through its coil of wire in order to generate a magnetic field. When an electric current passes through the coil, it creates a magnetic field around the electromagnet.
What happen to magnetic compass if the current is changed?
If an electric current flows through a wire, it will create a magnetic field. ... a ship or an airplane, it can damage or otherwise change the ship's magnetic compass.
What has to happen around a coil of wire to generate an induced current?
pass a magnetic field through the coil of wire.
What can happen to sound energy travelling through the air when it meets a new substance?
When sound energy meets a new substance, three things can happen: reflection (bouncing off the substance), absorption (being absorbed by the substance and converted into another form of energy), or transmission (passing through the substance). The extent to which each of these occur depends on the properties of the substance and the frequency of the sound wave.
When did Magnetic Soccer happen?
Magnetic Soccer happened in 1992.
What will happen to the electromagnet if the current stops?
If the current stops flowing through an electromagnet, the magnetic field that was being generated will also disappear. This will cause the electromagnet to lose its magnetic properties and no longer attract or repel magnetic materials.
What would you expect to happen if you put a steel rod inside the solenoid instead of an iron one?
If you place a steel rod inside a solenoid instead of an iron one, the magnetic field strength will still increase, but not as significantly as with an iron rod. Steel is a ferromagnetic material, but its magnetic permeability is generally lower than that of iron, leading to a weaker magnetic response. Consequently, while the steel rod will still enhance the magnetic field, its effectiveness will be reduced compared to an iron rod.
What would happen if the direction of the current through a hall probe is reversed?
The idea is that the magnetic field of the device reacts with the external magnetic field. If the current is reversed, the magnetic field would also be reversed, and the reading would be the opposite.
What happen to the heat energy as a substance solifies?
what happen to the heat energy as a substance solidifies
