What Do The Magnetic Properties Of A Material Depend On

What Do The Magnetic Properties Of A Material Depend On?

The magnetic state (or magnetic phase) of a material depends on temperature pressure and the applied magnetic field. A material may exhibit more than one form of magnetism as these variables change.

What does magnetic field depend on?

The motion of electrically charged particles gives rise to magnetism. The force acting on an electrically charged particle in a magnetic field depends on the magnitude of the charge the velocity of the particle and the strength of the magnetic field. All materials experience magnetism some more strongly than others.

What factors affect its magnetic properties?

The most basic factor is the configuration of the electrons in the material’s atoms. At the next level the ability of the atoms or molecules in the material to align magnetically is important in determining whether the material responds to a magnetic field.

What determines if a material is magnetic?

The magnetic properties of a substance can be determined by examining its electron configuration: If it has unpaired electrons then the substance is paramagnetic and if all electrons are paired the substance is then diamagnetic.

Does magnetic field depend on current?

The magnetic field is strongest in the area closest to the wire and its direction depends upon the direction of the current that produces the field as illustrated in this interactive animation.

Does magnetic field depend on time?

In this short chapter the magnetic field is a function of the time and this brings us back to electric fields because time-dependent magnetic fields are always accompanied by electric fields as we saw in Chapter 2. We return to the solenoid and to the Earth’s magnetic field.

Does the material of a magnet affect its strength?

Does the size of a magnet affect its strength? The short answer is yes but only because the size of a magnet means that there are proportionally more domains that can align and produce a stronger magnetic field than a smaller piece of the same material.

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How magnetic field depends on distance?

Magnetic force obeys an inverse square law with distance. … If the distance between two magnets is doubled the magnetic force between them will fall to a quarter of the initial value. (F/4) If the distance between two magnets is halved the magnetic force between them will increase to four times the initial value.

What depends on electric current to produce a magnetic field?

If we run an electric current through a wire it will produce a magnetic field around the wire. The direction of this magnetic field can be determined by the right-hand rule.

How does the strength of the magnetic field depend on the current?

The magnetic field is caused by the current flowing in the wire. The bigger the current the stronger the magnetic field and hence the stronger the electromagnet.

What variables does the magnetic force depend?

Background: A current-carrying wire in a magnetic field experiences a force that is usually referred to as a magnetic force. The magnitude and direction of this force depend on four variables: the current (I) the length of the wire ( L) the magnetic field ( B) and the angle between the field and the wire (θ).

On what factors does the value of magnetic flux depend?

Magnetic flux depends on three factors: the strength of the magnetic field the area through which the field lines pass and the orientation of the field with the surface area. If any of these quantities varies a corresponding variation in magnetic flux occurs.

What determines how strong a magnet is?

The more powerful the external magnetic field that is applied the greater the magnetization that results. This is the first of the factors that determines how strong a magnet becomes. The second is the type of material the magnet is made of. Different materials produce magnets of different strengths.

Does adding more magnets make it stronger?

Yes stacking multiple magnets together can make them stronger. Two or more magnets stacked together will exhibit nearly the same strength as a single magnet of the combined size.

What factors might make a magnet weak or not magnetic anymore?

4 Factors Causing Your Magnets to Get Weaker
  1. They Get Old. While the passage of time does weaken the strength of a magnet the changes are very slow. …
  2. They Get Very Cold (Or Hot) Temperature variation can cause magnets to lose some or all of their magnetic charge. …
  3. Reluctance Changes. …
  4. External Charges.

Why does magnetic force change with distance?

If the distance between two magnets with like poles gets smaller then the repelling force between them will get bigger because the force between two magnets gets stronger as they get closer together and weaker as they get farther apart.

Why is magnetic field strength inversely proportional to distance?

The total number of flux lines depends on the strength of the light source and is constant with increasing distance where a greater density of flux lines (lines per unit area) means a stronger energy field. Thus the field intensity is inversely proportional to the square of the distance from the source.

Why is magnetic and radius inversely proportional?

The strength of the magnetic field is the magnetic field intensity . The magnetic field intensity is defined as (B) = FLUX/AREA. Hence the magnetic flux density increases as the area of the coil decreases . … Hence the strength of the magnetic field is indirectly proportional to the radius of the coil.

How does the magnetic field of a coil depend on the current in the coil?

A wire coil that is carrying a current produces a magnetic field B( r) where r is the distance from the center of the coil to the field point. The strength of the field B is proportional to the current I in the coil. The strength and direction of the field depend on r. … For large distances both fields fall off as 1/r3.

How does magnetic field create electricity?

Magnetic fields can be used to make electricity

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The properties of magnets are used to make electricity. Moving magnetic fields pull and push electrons. … Moving a magnet around a coil of wire or moving a coil of wire around a magnet pushes the electrons in the wire and creates an electrical current.

Why does a current produce a magnetic field?

A magnetic field is generated by an electric current. While an electric charge is moving this is possible. … The magnetic field is generated when the atom spins and orbits the nucleus. The direction of the magnetic field is also dictated by the direction of the electric charge’s spin and orbiting.

How does the strength of the magnetic field at the Centre of the coil depends on?

The magnetic field strength varies directly with the number of turns of wire. It increases as the number of turns increases. Answer: The magnetic field at the centre of a circular coil of a wire is inversely proportional to the radius of the coil whereas Directly proportional to the number of turns of wire in the coil.

What affects the strength of the electric current produced by a magnet?

The four main factors that affect the strength of an electromagnet are the loop count the current the wire size and the presence of an iron core.

Why is the magnetic field strength greater inside a current carrying?

Why is the magnetic field strength greater inside a current-carrying loop of wire than about a straight section of wire? The magnetic field of each segment of wire in the loop due to electrons moving in the wire adds together inside the loop thereby making the field become bunched-up.

What are the three things that the magnetic flux depends on?

So it is clear that the magnetic flux depends on the flux density length of the coil velocity with which the coil is moved and the angle between the velocity and flux.

What are the factors on which magnetic field due to a current carrying straight conductor depends?

Magnetic field due to a current-carrying conductor depends on the current in the conductor and distance of the point from the conductor. The direction of the magnetic field is perpendicular to the wire.

What affects change of magnetic flux?

There are three ways to change the magnetic flux through a loop: Change the magnetic field strength (increase decrease) over the surface area. Change the area of the loop (increase by expanding the loop decrease by shrinking the loop)

What factors make the magnetic field stronger?

Factors Affecting the Strength of the Magnetic Field of an Electromagnet: Factors that affect the strength of electromagnets are the nature of the core material strength of the current passing through the core the number of turns of wire on the core and the shape and size of the core.

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What causes magnetism and what determines a magnets strength?

When you magnetize a piece of iron the north-seeking poles of the atoms align. The force generated by the aligned atoms creates a magnetic field. A larger piece of iron would have more atoms to align potentially resulting in a stronger magnetic field than a smaller piece of the same material.

What makes a magnet magnetic?

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.

What material makes the strongest magnet?

Neodymium Iron Boron

Neodymium Iron Boron (NdFeB) Magnets

Neodymium magnets are rare-earth magnet materials with the highest magnetic properties. Composed of neodymium iron & boron these strong permanent magnets are the most powerful class of magnet materials commercially available today.

How can a magnet lose its magnetic properties?

If a magnet is exposed to high temperatures the delicate balance between temperature and magnetic domains is destabilized. At around 80 °C a magnet will lose its magnetism and it will become demagnetized permanently if exposed to this temperature for a period or if heated above their Curie temperature.

Can magnetism pass through magnetic materials?

Can Magnetism Pass Through Everything? The magnetic force (or magnetism) can pass through thin sheets of non-magnetic objects such as paper glass or wood. However if the magnet is too weak and the material is too thick the magnetic force may not be able to pass through. … This is because iron is a magnetic material.

Do magnets last forever?

So how long should my permanent magnet last? Your permanent magnet should lose no more than 1% of its magnetic strength over a period of 100 years provided it is specified and cared for properly. There are a few things that may cause your magnet to lose its strength: HEAT.

Magnetic Properties


Materials And Their Properties

Magnetic susceptibility & permeability | Magnetism & matter | Physics | Khan Academy

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