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The length of a part being magnetized by passing an electric current from one end to the other affect 1 permeability 2 strength of magnetic field 3 not affect magnetic field?
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∙ 12y ago
Permeability
Wiki User
∙ 12y ago
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If a soft iron core is Inserted into a solenoid will the strength of magnetic field produced by it change?
It has been found that if a soft iron rod called core is placed inside a solenoid, then the strength of the magnetic field becomes very large because the iron core is magnetized by induction The core of the electromagnet must be of soft iron because soft iron loses all of its magnetism when current in the coil is switched off or stopped
What does an eletromagnet do in a motor?
Provide amoving magnetic force field.
How would you strengthen or weaken a magnet?
To increase the strength of a magnet you need to stack it between two stronger magnets or electromagnets. To weaken it, you'd have to heat it up, or use the same method as when strengthening, only this time you should flip the magnet so it would repel the stronger (electro)magnets.
When the distance from a charged particle decreases the strength of the electric field does what?
As the distance from a charged particle increases the strength of its electric field DECREASES.
What is electric potential dependent upon?
The magnitude of the electric potential is dependent upon the particle's charge and the electric field strength.
The strength of electric and magnetic fields remains constant as you move away from the source of the electric and magnetic fields?
yes
Where can you use a magnet?
A magnet can be theoretically used in any medium, but strength of the magnet will strongly be influenced by the magnetic permeability of that given medium.
Why does a magnet lose strength each time you drop it?
The magnetic poles of the magnetic domains are physically jarred and realign. They realign randomly. When a material appears to be strongly magnetized it is because these domains are aligned.
Does an electric current produces a magnetic field?
yes*edit: don't confuse moving with changing. A change in magnetic field strength/direction will induce an electric current.
How can the strength of electric magnetic fields be strengthened?
More electricity to, and/or more windings on, the coil.
On what factors does the strength of an electroment depends?
The strength of electromagnet depends on the electric current flowing through the core because when the current is stopped, the core is no longer magnetized and the rate of change of flux linkage.
How a magnetic field is created and how its strength is affected?
Through a current in a conductor; it is strengthened once by making a coil of the conductor and then by inserting an easily magnetized core inside the coil
Does a moving magnetic field produce an electric current?
yes*edit: don't confuse moving with changing. A change in magnetic field strength/direction will induce an electric current.
How does the strength of an electromagnet with an iron core compare to an electromagnet that simply has air at its core?
Permeability of the medium, that too, if it is ferro-magnetic material then it gets increased to a larger extent and so the magnetic induction too increases enormously.
Does the number of turns in the electromagnet effect its strength?
Magnetic induction B = mu * n * I Here mu is the magnetic permeability of the core material. n - the number of turns per unit length and I - the current in ampere. So as number of turns increases the magnetic effect too increases
What invisible force does the mineral lodestone have?
The mineral lodestone, also known as magnetite, is ferromagnetic, which means that it can be magnetized. Most of the magnetite found on Earth was magnetized by the Earth's magnetic field as the magnetite formed. Most naturally occurring lodestones are magnetized, but the strength of that magnetization is much less than any common magnet and can only be detected with sophisticated equipment. The invisible force is... magnetism.
Can you use an aluminum core for the magnet?
I cannot remember for sure, but in an electromagnet, an aluminum core would not have any permeability to add to the electromagnet's strength. An electromagnet is more efficient when a thicker core is used; it generates more power. The material you use should be prone to magnetism, as in attracted by permanent magnetic apparatuses or the such. So, an aluminum bar/core (cannot be magnetized), like you stated, wouldn't be the best choice for your magnet's core.
