0
they can close easily and they shut off the electricity when a fire alarm goes off magnets don't work any more and the they can be turned on and off.
Wiki User
∙ 13y ago
Year 3 Red RTB
Wiki User
∙ 15y agoWhen power is applied, the electromagnets hold the door open, so if the power fails, the doors close.
Add your answer:
Earn +20 pts
List 5 different ways magnets are used in every day life?
fridge magnets ,opening the fridge,closing the fridge,closing a cabinit.opening a cabnit
How can a magnet be used to create an electric current?
An electrical current will flow in a conductor, when a magnet is moved next to a conductor - or when the conductor is moved next to the magnet.
Why magnet is used for making standard resistance coil?
magnet produce emf it maintain the resistance as same
What happens to a magnet force when a bar magnet is cracked through the middle?
If a bar magnet is broken in half, each half is a magnet with its own north and south pole. The force used to break the magnet will also tend to partially demagnetize the magnet, although that might be a minor effect.
What is A magnetic substance can also be made into a?
If you are talking about a non-magnet item then the item will become a magnet for a period of time. Changes in heat, how much it is used, or time can disable the magnet. Magnet!
How is a magnet used in a wardrobe?
At the door of a wardrobe or as a hook for belts.
Why do magnets stick to fridge doors?
Because of the steel (iron) used to manufacture the door.
How is the fridge door magnet used?
it's magnetic
Why magnets slip down the fridge door and onto the floor?
the magnet used on most fridge magnets are low quality magnets, if you find a silver collored magnet you will find it sticks better, try sanding the black magnet off a bit, it might help
How are magnets used on car doors?
the magnet in the car door attracts the other magnet like south and north so the door shuts
What are the three uses of a permanent magnet?
Three uses of a permanent magnet are: 1. In the needles of compasses which are used to navigate airplanes and ships; 2. In fridge door seals, to hold the doors closed; 3. In loudspeakers and microphones, which need to have permanent magnets as well as electromagnets to work.
Give examples in which magnetic force is used?
All electric motors use magnetic force. So do electrical sound amplification systems. Magnetic levitation of high-speed trains is another example.
How are magnets used in fridge door works?
They basically work just like any other permanent magnet. The magnet, and the magnetic material (iron-based) in the refrigerator, attract one another.
How do we use magnets in everyday life?
Magnets are actually used in most of the items we use today, such as: * car doors * door hinges * computers * hoovers * blenders * CD players * washing machines * fax machines * escalators * elevators * loud speakers * credit cards * TVs * fridge doors * toys * jewelry * electric toothbrushes * junk yards * roller coasters *fridge magnets
What are magnet for?
Some magnets are used to make electric motors and generators.Some magnets are used for car doors,door hinges,computers,hovers,blenders, CD players,washing machines, fax machines, escalators, elevalators,loud speakers,credit cards,tv,fridge doors,toys,jewelry, and elecric toothbrushes, magnets are used in junk yards to make new cars too,magnets are used in Roller Coasters.These are called electro magnets and you can turn them on and off.and they are also used in the new unistation 360 witch is awesome.
What are magnets used for in every life?
Magnets are actually used in most of the items we use today, such as: * car doors * door hinges * computers * hoovers * blenders * CD players * washing machines * fax machines * escalators * elevators * loud speakers * credit cards * TVs * fridge doors * toys * jewelry * electric toothbrushes * junk yards * Roller Coasters *fridge magnets
Can a magnet be used for finding direction?
Yes. That is exactly what a magnetic compass does.a magnet, as in a fridge magnet cannot, but a magnetic compass can. a magnet compass points and directs itself the the north pole, where magnetic fields are located; this is why a magnetic compass can find directs as in NORTH SOUTH EAST OR WEST, it cannot say find it's way from say second street to third street,
