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What are two advantages of a electro magnet over natural magnet?
Wiki User
∙ 11y ago
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.
Wiki User
∙ 14y ago
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What are two advantages of artificial magnet over a natural magnet?
it can be made strongerit can be made in desired shape
What would happen if you pass a magnet over a mixture of iron fillings and sulfur powder?
The iron fillings are attracted by the magnet and separated from the sulphur powder.
Is a magnet made of lodestone?
a naturally occurring magnet composed of a form of iron called magnetite
WHICH IS MORE POWERFUL GRAVITY OR MAGNETISM?
Well, let's see. If I have a paper clip on a table and a magnet in my hand, and I slowly pass the magnet over the paper clip, the magnet in my hand is pulling the paper clip up with magnetism. If my magnet is close enough to the paper clip, the paper clip will jump up to the magnet ... even though the whole Earth is pulling it down with gravity.
Which of the following could a magnet float over network solid semiconductor superconductor molecular solid?
A superconductor.
What are two advantages of a natural magnet over electromagnet?
A natural magnet is permanent - an electromagnet loses its power when it's switched off.
What are two advantages of artificial magnet over a natural magnet?
it can be made strongerit can be made in desired shape
What advantages does natural gas over oil?
i have no answer for this question sory
What advantages natural gas over oil?
i have no answer for this question sory
What are the advantages of propane over natural gas?
Higher energy content
What are the advantages do manufactured boards have over natural woods?
it doesn't break easily
What are the principles of an electric bell?
An electric bell uses electro-magnetism to move a sprng loaded bell striker. A Direct Current bell uses a slightly different approach as the magnetic field does not alternate. In a DC bell, an electro magnet pulls the striker closer (causing the bell to be hit), and a small switch on the striker opens shutting off the current to the electomagnet. A spring returns the striker to its resting place, and the switch is reclosed, allowing the electro-magnet to pull the striker toward it (and the bell), starting the cycle over again.Asjusting the spring tension and the swiching points allows the bell to be adjusted so that the frequency of the strikes (and their relative volume), can be 'tuned' within a small range. Increasing the voltage (and therefore, current) has a similar effect to increase the frequency (e.g. shorten the amount of time between each bell strike), and the volume as the striker has a greater electro magnetic force acting upon it.A buzzer is the identical design, but the striker hits the electromagnet only, and not a bell.It's a Simple Electro-magnetic mechanism. In a bell, there is a circuit for an Electro-Magnetic (which is triggered by the button). This electro magnet is covered by a metal "bowl". Also, there is a metal rod, attached to a stationary end. So, when someone pushes a button, the circuit is closed => electricity go through the Electro Magnet => the metal rod is attracted to the magnet and hit the bowl, creating a sound.
What advantages do natural fabric have over synthetic fabric?
natural fabric a sobs more water the synthetic fabric. natural fabric is natural plants. synthetic fabric is man made.
What advantages do plastic corks made by Namacork have over natural cork?
The plastic cork has a lesser chance of being contaminated compared to the natural cork.
What are the advantages disadvantages of nationalisation?
The advantages of nationalism are that they give the government control over the country's Natural Resources, instead of giving it to foreign companies. The disadvantage is that it stifles competition.
Can steel passing over a magnet be recorded?
The EFFECT of steel passing over a magnet can be detected and therefore recorded.
Can you laminate over a magnet?
wont hurt the laminate, might insulate the magnet..
