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Permanent magnets and electromagnets both hold their magnetism for a long period?
Wiki User
∙ 12y ago
the answer is false
Permanent magnets will hold their magnetism for a long period of time. Electromagnets will only remain magnetic as long as current is flowing through them.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoPermanent magnets do, but electromagnets only hold their magnetism while the current is running.
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What is the definition of temporary?
Lasting for only a limited period of time; not permanent.
Why doesn't iron act like a magnet?
Great question. The Earth has a magnetic field but it is not strong enough to overcome the other forces affecting pieces of iron. But if you wanted to make a super-accurate weighing scale, you would avoid iron for its hanging parts. And every steel can in your kitchen is magnetized from sitting in the Earths magnetic field. Put a compass needle close to a can of beans and see!
What does probationary basis mean?
A probationary employee is one who, for a given period of time, is being observed and evaluated to determine whether or not he is qualified for permanent employment. A probationary appointment affords the employer an opportunity to observe the skill, competence and attitude of a probationer. The word "probationary", as used to describe the period of employment, implies the purpose of the term or period. While the employer observes the fitness, propriety and efficiency of a probationer to ascertain whether he is qualified for permanent employment, the probationer at the same time, seeks to prove to the employer that he has the qualifications to meet the reasonable standards for permanent employment.
What is the difference between the permanent files and temporary files?
Permenent files do not get deleted and are kept for an indefinte period of time whilst temporary files do get deleted, and may or are only expected to have a specific time period of use before deletion.
12 periods in order from the preCambrian to the quaternary?
The 11 geological periods from Precambrian to Quaternary are :-Paleozoic Era Cambrian Period - 542 to 488.3 million years agoOrdovician Period - 488.3 to 443.7 MaSilurian Period - 443.7 to 416 MaDevonian Period - 416 to 359.2 MaCarboniferous Period - 359.2 to 299 MaPermian Period - 299 to 251 MaMesozoic Era Triassic Period - 251 to 199.6 MaJurassic Period - 199.6 to 145.5 MaCretaceous Period - 145.5 to 65.5 MaCenozoic Era Paleogene Period - 65.5 to 23.3 MaNeogene Period - 23.3 to 2.588 Ma
Both permanent magnets and electromagnets hold their magnetism for a long period of time.?
false
Is a bar magnet a permanent magnet?
A permanent magnet is a magnet which will keep its magnetism for a very long time and is difficult to change. No, As I think a permanent magnet means they have abilities to hold the magnetism when they are magnetized. Such as Alnico permanent magnets, but in fact, they can be demagnetized,such as high temperature, hit each other,pulse waves, out magnetic field influence...What's more, different permanent magnetic material, have different abilities on holding magnetism,they can be used in different environments. you can find some details from some manufacturers website, to learn some knowledges.
How are permanent magnets bad?
Permanent magnets aren't bad. period. I do not know where you heard that but whatevs..
Differences between the magnetic properties of steel and iron?
Iron gets magnetized faster but loses its magnetism as soon as the inducing magnet is removed. Hence soft iron is said to have high susceptibility but low retentivity. This property of soft iron is very useful in making temporary electromagnets where we need strong but temporary magnets. If the magnets used in these devices were to retain their magnetism for a longer period, the devices would not function properly. Steel is slow to be magnetized but retains the acquired magnetism for a long time. Steel is said to have low susceptibility but high retentivity. Steel is used for making magnets.
Which magnets can retain their property for a short period of time?
Electro-magnets
Why was studying magnetism important in the period of 1500 to 1600?
u no wot m8 i ain't got a clue
The ending account balance of permanent accounts for one fiscal period are the beginning account balances for the next fiscal period?
th ending account balances of permanent accounts for one fisical period?
Can magnets wear out?
Magnets can be destroyed just like any physical object can be destroyed if enough force is applied. Magnets can also be de-magnetised in a number of ways, including heating them, bending them out of shape, or exposing them to electric current.
Are the words temporary and permanent are they homophonesantonyms or synonyms?
Temporary and permanent are antonyms. Temporary means for a short period of time and permanent means for a long time/forever.
Why boys so rude?
They have a permanent internal period, called "mccoytotis"
What is the definition of temporary?
Lasting for only a limited period of time; not permanent.
What account does not close at the end of the period?
Real or permanent accounts are balance sheet accounts which have a continuous nature and accumulate data from period to period; such accounts are not closed at the end of the reporting period.
