0
What are two devices in a household that use permanent magnets?
Wiki User
∙ 14y ago
Speakers, and computer hard drives.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is the role of permanent magnets in a speaker?
The electromagnet is positioned in a constant magnetic field created by a permanent magnet. These two magnets -- the electromagnet and the permanent magnet -- interact with each other as any two magnets do. The positive end of the electromagnet is attracted to the negative pole of the permanent magnetic field, and the negative pole of the electromagnet is repelled by the permanent magnet's negative pole. When the electromagnet's polar orientation switches, so does the direction of repulsion and attraction. In this way, the alternating current constantly reverses the magnetic forces between the voice coil and the permanent magnet. This pushes the coil back and forth rapidly, like a piston.
Where can you get a magnet?
For a new super strong magnet that has just been developed called rare earth neodymium magnets, there is a website in the related links below. I looked at it earlier and the prices were quite reasonable. But search the web to compare prices. I personally have a pile of magnets that I have scavenged over the years from mechanical devices. The magnetrons in microwave ovens in particular have two very strong relatively large magnets. Small electrical motors usually have permanent magnets in them. Speakers do as well.
Which TWO types of magnets do you need to make a simple motor?
The most basic of electric motors consists of a permanent magnet and an electromagnet. This is not a requirement for all types of electric motors and most modern electric motors do not have permanent magnets. The stator and rotor are the two active elements of a simple electric motor and both have magnetic fields in the various types and designs of simple motors.
Where did magnets get their name?
http://dictionary.reference.com/browse/Magnet"Origin:1400-50; late ME magnete < L magnēta < Gk mágnēta, acc. of mágnēs, short for (hē) Mágnēs (líthos) (the stone) of Magnesia"
Name one use of magnets in everyday life?
One of the most common use for magnets is on cupboard doors to hold them closed you will also find magnets in lots of electrical devices because they are a main component in speakers of all sizes even the tiny ones used in phones. I could go on and on but you only asked for one and I gave you two.
What household objects have magnets in?
Two household objects that have magnets are: fridge magnets, and sizzlers
What are the eleven types of magnets?
There are two fundamental types of magnets, permanent and electromagnet. Both of these may be presented in numerous forms, and there seems no merit in considering any particular eleven.
Inside a stereo speaker you will find two permanent magnets one on the cone and one near the cone?
False
What is the role of permanent magnets in a speaker?
The electromagnet is positioned in a constant magnetic field created by a permanent magnet. These two magnets -- the electromagnet and the permanent magnet -- interact with each other as any two magnets do. The positive end of the electromagnet is attracted to the negative pole of the permanent magnetic field, and the negative pole of the electromagnet is repelled by the permanent magnet's negative pole. When the electromagnet's polar orientation switches, so does the direction of repulsion and attraction. In this way, the alternating current constantly reverses the magnetic forces between the voice coil and the permanent magnet. This pushes the coil back and forth rapidly, like a piston.
Where can you get a magnet?
For a new super strong magnet that has just been developed called rare earth neodymium magnets, there is a website in the related links below. I looked at it earlier and the prices were quite reasonable. But search the web to compare prices. I personally have a pile of magnets that I have scavenged over the years from mechanical devices. The magnetrons in microwave ovens in particular have two very strong relatively large magnets. Small electrical motors usually have permanent magnets in them. Speakers do as well.
What is a true statement about the magnetic field between two magnets?
The south pole of one magnet is attracted to the north pole of the other magnet.
What are statement that are true of magnets?
A magnet always has two poles.They have a magnetic field.Electromagnets can be made much stronger than permanent magnets.A magnet always has two poles.
If you force the like poles of two permanent magnets to stay together will they eventually stop repelling each other?
i dontd think so
What are some statements that are true of magnets?
A magnet always has two poles.They have a magnetic field.Electromagnets can be made much stronger than permanent magnets.A magnet always has two poles.
Permanent hardness of water due to?
Calcium, magnesium, iron and manganese ions, the first two are the commonest in household water.
Which TWO types of magnets do you need to make a simple motor?
The most basic of electric motors consists of a permanent magnet and an electromagnet. This is not a requirement for all types of electric motors and most modern electric motors do not have permanent magnets. The stator and rotor are the two active elements of a simple electric motor and both have magnetic fields in the various types and designs of simple motors.
Do simple magnets have two poles?
all magnets have two poles
