That's because the strenght of the electromagnet is related to the number of coils then, the more coils gets more strenght because as you add more coils to the electromagnet you have more and more magnetic field.
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The strength of an electromagnet depends on
-- the magnitude of the electric current in the wire coil,
-- the number of turns of wire in the coil,
-- the composition of the material in the core surrounded by the coil.
The bigger the electromagnet the stronger the strength.
It makes the electromagnet stronger as more power is being passed through it
Increasing the current I will give a proportionate increase in field strength B.
Yes it does, because the bigger the core the bigger the strength !
Yes it does,becauseit the electricfieldstronger.
Electromagnet feeds electrical cerrents. And the coil becomes harder(because of the currents).
the amount of current supplied.
yes
It's directly proportional.
Three things affect the strength of an electromagnet.The number of turns/wraps of wire.The amount of current flowing through the wire (which is determined by the voltage and the size & kind of the wire).What the core is made of -- the core is the thing the wire is wound around. It will be much stronger if wound around metal than air. Iron makes a better core than most other metals.
First off, the two main factors are the power source and the number of windings in your Electromagnet. Higher wattage input can produce a stronger magnetic field. More windings will also increase the strength of the field. Type and gauge of the conductor will also affect performance. More factors to consider: The diameter of the coils, and the inductor core material. Make a simple ring of wire, maybe a dozen windings, attach a power source, and you will have an electromagnet (though not very useful in that form). Wrapping a wire around a large iron nail and attaching a power source will prove more effective. In the first example the core material is natural air. Air does not induce well, and therefore does not create a good magnet. In the second example, the iron core (the nail) through induction, greatly increases the magnetic field. The iron can also become temporarly magnetized through this process. Note: Do NOT use household line voltage, as this may be too powerful and cause injury.
It can. If the core isn't large enough for the number of windings and the amount of current flowing through those windings, the field can saturate the core. If the core is saturated, driving more current through the windings to increase the field strength will fail to achieve that increased field strength. The current is "wasted" that way. Let's look at saturation first. Picture a horseshoe for our core shape. When direct current flows through the windings in an electromagnet, it sets up a magnetic field in the core. (The windings are wound around the core like fishing line on a fishing reel.) The lines of force go through the core material, and, since we are using a horseshoe magnet, the lines of force will travel all the way though the core and will "emerge" from one end of the horseshoe to "jump the gap" across the open end of the magnet to "get back into" the other pole. That way the magnetic field can have a "closed circuit" from the point of view of the magnetic lines of force. Magnets will always have lines of force emerging from one pole and taking some path to get to the other pole to go back into the core. And just like a pipe can allow only so much water to flow through it because of its size, the same can be said to be true with the core of an electromagnet. There is a limt as regards the number of magnetic lines of force that can pass through a core of a given size (material considerations aside). Only so many of the lines of force can pass through before saturation occurs and no more can be included. That's a function of the size of the core (as well as a couple of other factors). A bigger core will allow us to increase the lifting capacity when we increase the current in the windings. That way we can avoid saturating the core. Let's pretend we have an electromagnet that will lift, say, a ton, and it uses, say 100 amps of DC current to do that. We want to lift a ton and a half, so we try to drive 150 amps through the windings. But let's say that the core saturates at 110 amps. That means that the core won't support more magnetic lines of force than will be flowing when the current is at 110 amps. We can continue to drive more current through the windings in the electromagnet, but the lifting power won't continue to increase. The saturated core has limited the amount of weight we can get the electromagnet to lift. The core is too small to work at the elevated current we want it to work at. Electromagnets are usually designed with a specific load limit in mind. It is possible to "overdrive" the electromagnet a bit to increase load capacity, but there will be a limit to what can be done to make the magnet pick up a heavier load. The size of the core is one of the factors that will limit the capacity of the electromagnet.
The field strength of an electromagnet (and the shape of that field) will largely be determined by the physical characteristics and geometry of the coil (wire size, number of turns, spacing of turns, diameter of coil, etc.), the current flow through the coil's wire and the material and shape of the core. The most variable aspect of the electromagnet is the current we run through it. Once the electromagnet is designed and constructed, the limits are "built in" and about all we can vary is current. Use the link to the GSU Hyperphysics site and it's diagram of an electromagnet. (Be sure to scroll down a bit.) Also, look around on that site, if you have time. There is a lot of good basic physics there. The explanations are very reader friendly and the diagrams are pretty good, too.
It's directly proportional.
Three things affect the strength of an electromagnet.The number of turns/wraps of wire.The amount of current flowing through the wire (which is determined by the voltage and the size & kind of the wire).What the core is made of -- the core is the thing the wire is wound around. It will be much stronger if wound around metal than air. Iron makes a better core than most other metals.
Size does not but mass does.
First off, the two main factors are the power source and the number of windings in your Electromagnet. Higher wattage input can produce a stronger magnetic field. More windings will also increase the strength of the field. Type and gauge of the conductor will also affect performance. More factors to consider: The diameter of the coils, and the inductor core material. Make a simple ring of wire, maybe a dozen windings, attach a power source, and you will have an electromagnet (though not very useful in that form). Wrapping a wire around a large iron nail and attaching a power source will prove more effective. In the first example the core material is natural air. Air does not induce well, and therefore does not create a good magnet. In the second example, the iron core (the nail) through induction, greatly increases the magnetic field. The iron can also become temporarly magnetized through this process. Note: Do NOT use household line voltage, as this may be too powerful and cause injury.
i think it's not on the size but rather on the voltage capacity of the battery.. usually bigger batteries have higher voltages that's why we may relate it to their size, but there are some batteries despite being small in size have higher voltages. if we are comparing two batteries of different sizes but with the same voltages, maybe the question is which one will last and would sustain your magnet longer.. but in terms of power, they are the same
Either increasing the size of the current (in amps) or the number of turns of wire wrapped around the core will make a stronger magnet. A larger current will make a stronger magnet (up until too much makes the wire melt!). Increasing the voltage forces more current through the electromagnet.
An electromagnet isn't designed to output any temperature. If it does that, then you can be sure that the size of wire from which it's wound is too small to safely carry the current it is carrying.
NO.it doesnt.
Yes it does!
No, as in this case,the rod is the magnet,and the strength of a magnet does not depend on its size.
It can. If the core isn't large enough for the number of windings and the amount of current flowing through those windings, the field can saturate the core. If the core is saturated, driving more current through the windings to increase the field strength will fail to achieve that increased field strength. The current is "wasted" that way. Let's look at saturation first. Picture a horseshoe for our core shape. When direct current flows through the windings in an electromagnet, it sets up a magnetic field in the core. (The windings are wound around the core like fishing line on a fishing reel.) The lines of force go through the core material, and, since we are using a horseshoe magnet, the lines of force will travel all the way though the core and will "emerge" from one end of the horseshoe to "jump the gap" across the open end of the magnet to "get back into" the other pole. That way the magnetic field can have a "closed circuit" from the point of view of the magnetic lines of force. Magnets will always have lines of force emerging from one pole and taking some path to get to the other pole to go back into the core. And just like a pipe can allow only so much water to flow through it because of its size, the same can be said to be true with the core of an electromagnet. There is a limt as regards the number of magnetic lines of force that can pass through a core of a given size (material considerations aside). Only so many of the lines of force can pass through before saturation occurs and no more can be included. That's a function of the size of the core (as well as a couple of other factors). A bigger core will allow us to increase the lifting capacity when we increase the current in the windings. That way we can avoid saturating the core. Let's pretend we have an electromagnet that will lift, say, a ton, and it uses, say 100 amps of DC current to do that. We want to lift a ton and a half, so we try to drive 150 amps through the windings. But let's say that the core saturates at 110 amps. That means that the core won't support more magnetic lines of force than will be flowing when the current is at 110 amps. We can continue to drive more current through the windings in the electromagnet, but the lifting power won't continue to increase. The saturated core has limited the amount of weight we can get the electromagnet to lift. The core is too small to work at the elevated current we want it to work at. Electromagnets are usually designed with a specific load limit in mind. It is possible to "overdrive" the electromagnet a bit to increase load capacity, but there will be a limit to what can be done to make the magnet pick up a heavier load. The size of the core is one of the factors that will limit the capacity of the electromagnet.
yes