Poles of a Magnet

#poles #force #magnets #ngscience
Observe the interactions that take place when the poles of bar magnets are brought together.

Here we have two bar magnets. At the ends of each bar magnet are poles. There is a north pole at one end and a south pole at the other. It is at the poles where the magnetic force of the bar magnet is the strongest.

Predict what will happen when the opposite poles of each bar magnet are brought together. Check it out - they attract each other. The magnets don't need to be touching. The attraction force acts at a distance.

Predict what will happen when the like poles of each bar magnet are brought together. Check it out - they repel each other. The repulsion force also acts at a distance.

Check out our related videos to see other ways magnetic interact with objects and other magnets.

Non-contact Forces – Magnetic Force
Place an iron nail on a table. Slowly move a magnet towards the nail. What do you notice?

A magnet is an object with magnetic force. Magnetic force occurs in an object due to the motion of electrically-charged particles. As you observed when you moved the magnet near the iron nail, magnetic force can act at a distance. It is a non-contact force. It can act through solids, liquids and gases.

Magnetic force can attract objects made of certain metals such as iron and nickel. Magnetic force cannot attract objects made of plastic, wood, rubber or glass.

A magnet has two poles – a North pole and a South pole. It is at each pole that the magnetic force is the strongest.

When the like poles of two magnets are brought together, they push or repel each other. When unlike poles are brought together, they pull or attract each other.

Many objects make use of magnetic force. Some doors use magnets to keep them closed. Magnets are used to stick notes and photographs to refrigerators. They are used in electric motors, loudspeakers and can also be used for medical imaging and storing data on computer disks.

When a magnet is hanging freely, it will come to rest with the South pole pointing in the direction of north and the North pole pointing in the direction of south. A compass is a device that uses this property to find the direction of north.

A maglev (magnetic levitation) train has magnets that repel it from the track. This reduces friction and allows the train to travel at fast speeds.

[the_original_Bilb_Ono]

I'm trying to figure out how to differentiate the north from the south pole on a powerful magnet that isn't marked. I can tell where the poles are with metal shavings, but which one of the two is north???

[ernestguarde]

Is there any explanation why the same pole can’t touch each other?

[mfslivesdaily]

explained it better than my teacher does

[DolphinBuddy-qe]

But which side is positive and which is negative? How do you tell the difference?

[Sangamesh]

Thanks bro I did not understand your language but I understand the expire ment so thanks for your explain

[jeankadimashi]

thanks bro I'm writing an exam tomorrow

[ubadaashaeib]

if I cut the magnet in middle, what will happen ?
do they become tow pieces one for S and other for N

where the magnets gain this power ? is it natural ?

[apamary-zi]

Why In Magnet There Is North And South Pole?? Can You Explain It Plez

[soumeyasrivastava]

I don't understand what you speak