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Why is there a limit to the amount of current that can be used in an electromagnet?
It could overheat
What is the best metal to make an electromagnet out of?
An iron core and copper wire (that is coated with an insulator) are used all the time to make electromagnets.
Does a pen weigh more than a pencil?
That all depends on the composition of the materials used. It could be the pen, or it could be the pencil.
What is a suitable material for the core of an electromagnet?
A coil of something conductive to produce the electromagnetic field is the bare minimum. Most electromagnets also have a ferrous metal (which is magnetized in turn) core or housing as well.
What is the purpose of the soft iron core used in making electromagnet?
The purpose is to enhance the magnetic field - to make it stronger - compared to just using air.
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.
What has a wire-wrapped core?
A coil of wire or a coil in the shape of a cylinder is a typical shape for an electromagnet (or a solenoid). The strength of the magnetic field of an electromagnet can be increased significantly if the coil is wrapped around an iron core. This configuration may be called an inductor when used as an element of an electrical circuit.
What is a example of converting electrical energy into magnetic energy?
An electromagnet, a coil of wire round a magnetic core. An electric current in the wire produces a magnetic field round the core, which contains energy which could be used to lift a load.
Why is there a limit to the amount of current that can be used in an electromagnet?
It could overheat
Why is iron nail used to make an electromagnet?
because exhibits maximum flux density requires small magnetising field exhibits low hysteresis loop
What is a pencial?
A "pencil" is a tube of wood containing a core of graphite. It is often used for writing or drawing.
What is the best metal to make an electromagnet out of?
An iron core and copper wire (that is coated with an insulator) are used all the time to make electromagnets.
Does a pen weigh more than a pencil?
That all depends on the composition of the materials used. It could be the pen, or it could be the pencil.
What is a suitable material for the core of an electromagnet?
A coil of something conductive to produce the electromagnetic field is the bare minimum. Most electromagnets also have a ferrous metal (which is magnetized in turn) core or housing as well.
What is the purpose of the soft iron core used in making electromagnet?
The purpose is to enhance the magnetic field - to make it stronger - compared to just using air.
How does lead make a pencil write?
The core of a pencil (used to be actual poisonous lead, now is made of graphite) is soft enough that it can deposit a layer of material when subject to friction (AKA "scratched").
Which metal is commonly used in electromagnet?
From the wikipedia article: http://en.wikipedia.org/wiki/Electromagnet A coil forming the shape of a straight tube, a helix (similar to a corkscrew) is called a solenoid; a solenoid that is bent into a donut shape so that the ends meet is a toroid. Much stronger magnetic fields can be produced if a "core" of ferromagnetic material, such as soft iron, is placed inside the coil. The core magnifies the magnetic field to thousands of times the strength of the field of the coil alone. This is called a ferromagnetic-core or iron-core electromagnet. I will assume that you wish to know the metal that is commonly employed as the core, this depends on the application of the magnet but Soft iron is used for many applications. An easy way to produce a electromagnet is using some copper wire, an iron nail and a battery. For further information on which metal is usually used for cores of magnets can be found at the wikepedia site: http://en.wikipedia.org/wiki/Magnetic_core#Common_magnetic_core_materials.
