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Electromagnets can be stronger than permanent magnets because the strength of an electromagnet can be adjusted by changing the amount of electric current flowing through its coil. On the other hand, permanent magnets have a fixed magnetic field strength determined by the material they are made from.
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Electromagnets are generally weaker than permanent magnets?
Depends on the size. One good example of a powerful electromagnet is the one used to lift cars at junk yards. Permanent magnets are not used for that due to the sheer power needed to lift cars. Also, electromagnets can be turned ON and OFF making them useful in picking up and then dropping the junk cars as needed. Another big example of electromagnets are the ones used on power generators to generate electric power.
When is a magnet field stronger when is it weaker?
A magnetic field is stronger when the magnets are closer together, and weaker when they are farther apart. The strength of a magnetic field also depends on the material the magnets are made of and their physical size.
Are bigger magnets always stronger?
No, the size of a magnet does not always determine its strength. The strength of a magnet is primarily determined by the material it is made of and its shape. Smaller magnets made from strong materials can be more powerful than larger magnets made from weaker materials.
How are temporary magnets different from permanent magnets?
They are temporary, they can only attract for a few seconds, as permanent magnets can attract for as long it is needed.AnswerA permanent magnet is a material which retains its magnetism once any external magnetising force has been removed. For example, when the current passing though a coil wound around that material is switched off. Permanent magnets are used in certain measuring instruments, such as moving-coil instruments, fridge magnets, etc.A temporary magnet is a material which retains its magnetism providing any external magnetising force continues to be applied. For example, when the current passing though a coil wound around that material flows, it will continue to act as a magnet, but once the current is turned off it will lose that magnetism (or most of it!). Temporary magnets are used to manufacture relays, transformer cores, etc.
What are four factors that can be varied to change the strength of two magnets?
increase the current in the solenoid add more loops of wire to the solenoid,wind the coils of the solenoid closer together, use a stronger ferromagnetic material for the core. I hope this answered better than the last rude person.
Are electromagnets weaker than permanets magnets?
Not necessarily. electromagnets can be extremely powerful, capable of lifting tons of metal.
Electromagnets are generally weaker than permanent magnets?
Depends on the size. One good example of a powerful electromagnet is the one used to lift cars at junk yards. Permanent magnets are not used for that due to the sheer power needed to lift cars. Also, electromagnets can be turned ON and OFF making them useful in picking up and then dropping the junk cars as needed. Another big example of electromagnets are the ones used on power generators to generate electric power.
Advantages and disadvantages of electromagnets?
There are many reasons why electromagnets shouldn't be used. For example, permanent magnets are better to use economically because there is no cost of operation, like an electromagnet. There is also no maintenance or hardly any setup required. For permanent magnets, they can be used for a lot longer than electromagnets becausecan be used in hazardous places and are they are unaffected by shock or vibrations. Electromagnets require electricity to run, which costs money. They also burnout or lose its magnetism after a while. There are also many reasons why electromagnets should be used. For an electromagnet, a person could easily control the power of the magnetism, unlike the permanent magnet which has the same intensity throughout. A person could also turn the power of the magnet on and off, which can become useful in certain situations. An electromagnet can also be made stronger than permanent magnets. The electromagnet also has a good field of depth, unlike the permanent magnets limited field depth.
When is a magnet field stronger when is it weaker?
A magnetic field is stronger when the magnets are closer together, and weaker when they are farther apart. The strength of a magnetic field also depends on the material the magnets are made of and their physical size.
Are magnets poles equally strong?
Not if the magnet is symmetrical, and you define 'strength' in terms of flux density.Yes because it has a stronger attraction rate.there is no stronger or weaker for a magnet
Is venus stronger or weaker?
weaker
Is Hurricane Gustav getting stronger or weaker?
stronger it getting biger Weaker
Is Mars a stronger or weaker planet?
Mars is a stronger planet not a weaker planet
Are bigger magnets always stronger?
No, the size of a magnet does not always determine its strength. The strength of a magnet is primarily determined by the material it is made of and its shape. Smaller magnets made from strong materials can be more powerful than larger magnets made from weaker materials.
Does temp affect magnets?
Yes, temperature can affect the magnetic properties of a magnet. In general, magnets become weaker at higher temperatures and stronger at lower temperatures. Extreme temperatures can also cause permanent damage to the magnet's magnetic properties.
How are temporary magnets different from permanent magnets?
They are temporary, they can only attract for a few seconds, as permanent magnets can attract for as long it is needed.AnswerA permanent magnet is a material which retains its magnetism once any external magnetising force has been removed. For example, when the current passing though a coil wound around that material is switched off. Permanent magnets are used in certain measuring instruments, such as moving-coil instruments, fridge magnets, etc.A temporary magnet is a material which retains its magnetism providing any external magnetising force continues to be applied. For example, when the current passing though a coil wound around that material flows, it will continue to act as a magnet, but once the current is turned off it will lose that magnetism (or most of it!). Temporary magnets are used to manufacture relays, transformer cores, etc.
Does the energy that Magnets produce ever run out?
Yes magnets get weaker over time.
