An electromagnet can be any size from a few millimetres (magnetic tape or computer hard disc read/write heads) to several metres (industrial uses such as scrap yards for lifting steel, or research such as parts in particle accelerators and fusion reactors). The only limit to the upper size would be available materials and manufacturing technology.
Ugliness
The eletromagnet works by the energy flowing through the wire wrapped around the iron rod that causes the magnetic field
a oreo cookie and a small eletromagnet
permanet object
Provide amoving magnetic force field.
Is a eletromagnet with a six volt lantern battery really powerful or not?
The magnetic field becomes weaker as you move away from the electromagnetic source.
The eletromagnet works by the energy flowing through the wire wrapped around the iron rod that causes the magnetic field
I believe that it's spelled electromagnet. An electromagnet is produced by electricity flowing through a wire wrapped around a needle 30 or more times.
the way in which the positive & negative terminals on the battery or power supply are attached to the electromagnet. switching the leads from the positive terminal to the negative one, and the negative one to the positive terminal should reverse the polarity of your electromagnet.
because it is big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great and big and great.
No.