Effective way to make magnets stronger with electricity

Magnets have varying strength. Some can be stronger or weaker than the others. In order to test which one magnet is stronger, you can set up an experiment with 2 bowls of thumbtacks. Using a magnet each in each bowl put the magnet closely to the thumbtacks. The magnet that attracts the most thumbtacks is the stronger of the 2 magnets.

Steel is harder to magnetise but does not lose its magnetism as quickly as iron.

 

Why Do Magnets Lose Strength?

 

A magnet loses its strength on impact such as being hammered or dropped onto a hard surface. Heating a magnet also causes the magnet to lose its magnetism.

 

• Impact: Dropping or striking a magnet misaligns the domains of its magnetic force.
• Heat: High temperatures disrupt magnetic domain alignment.
• Material Type: Steel retains magnetism better than iron, but it is harder to magnetize.

 

Natural vs. Artificial Magnets:

 

lodestones

 

Magnets which are found naturally are called lodestones.

 

Artificial Magnets:

 

Magnets can also be made out of magnetic materials, such as nickel, iron, cobalt and steel, which have magnetic properties. You can make magnets by stroking, using electricity or induction.

 

how to make a magnet stronger with a battery

 

• For stroking, you need a magnet and a magnetic object such as an iron rod. First, stroke the iron rod with one end (pole) of the magnet.

 

• Then, repeat the stroking process for about 15 times using the same end in the same direction. Test the newly made magnet on some iron fillings or paperclips.

 

• If it attracts the fillings, the iron rod is magnetized and can act as a magnet. The end of the rod which last touched the North pole becomes the South pole and vice versa.

 

Electromagnet

 

If you want to know how to make a magnet stronger with a battery, or how to make a magnet stronger with electricity you will need a battery, electrical wire, and an iron rod.

 

Electromagnetism with a Battery:

 

• Obtain a battery, copper wire, and iron rod.
• Make at least five coils around the rod.
• Connect the battery ends to the wire.
• Iron rods become electromagnets when current is cut off, but their magnetism disappears once that current has been cut off.
• Tip: Make a magnet stronger by increasing the number of coils or batteries.

 

 

Induction Method:

 

For induction, you will need a magnet and a magnetic object such a nails. Bring the magnet to the nail and which will be attracted. The nail is now magnetized and is ready to be used as a magnet.

 

Applications of Electromagnets:

Electromagnets are used in:

• Medical Devices: MRI machines.
• Cranes: For lifting heavy scrap metal.
• Speakers: Converting electric signals into sound.

 

Learn at Miracle learning Centre

 

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