The electromagnet can be turned on and off depending on whether it's needed or not.
I need help on it too :( But i think one advantage is that it can produce electricity
The advantages of horseshoe magnets over a bar magnet is the poles of the magnet are closer together on the horseshoe magnet. This allows for a stronger magnetic field.
it can be made strongerit can be made in desired shape
Every magnet has at least one "North" and one "South" pole where its magnetic forces leave the magnet and enter its surroundings. It is commonly thought that the magnetic forces leave one pole and enter the other pole. The magnetic force field tries to make a loop toward the other pole as it leaves one of the poles. The poles of a horseshoe magnet are closer than those of a bar magnet therefore concentrating the forces between those poles and making the attraction/repulsion stronger. duh.
The electromagnet can be turned on and off depending on whether it's needed or not.
The advantage of an elecromagnet is that you can turn it on and off with a simple switch. So for example if you want to pick up a scrap car with a crane/electromagnet and move it, you can turn the electromagnet off when you want to release the car. You could not do the with a permanent magnet obviously.
A permanent magnet is always on; there isn't any way to turn it off. An electromagnet can be controlled; you can turn it on or off, or change the amount of magnetism by varying the current passing through the coils.
A natural magnet is permanent - an electromagnet loses its power when it's switched off.
It doesn't require energy to maintain the magnetic field.
those which act like a permanet magnet when they are within a strrong magnetic fiel
Electromagnets can have higher "domain currents" than permanent magnets, and have no non-aligned nor anti-aligned domains like permanent magnets tend to have (or get over time).
Electromagnets' magnetism can be manipulated. Electromagnets can be magnetised and demagnetised by passing electric current. Therefore they are used in motors- which works when the coil is magnetised by passing an electric current. It is also used for cranes.
I need help on it too :( But i think one advantage is that it can produce electricity
You have to take it out on a nice date first. Second, you have to pleasure the magnet for exactly 42 minutes. Third, you rub tons of ranch dressing all over the magnet on each side and keep it on there for 3-4 hours. These are the steps to make your electromagnet stronger.
I would use an electromagnet. Spread the mixture out on something, turn on the magnet and move it over the mixture to pick up the iron. Then hold the magnet over a container, turn it off, and the iron will fall into the container.
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