Demagnetization

Magnet 10th to become weaker after sometime is the poles are left free this is called what

• Self demagnetization

• Arora

• Keepers

Magnets tend to become weaker after some time if their poles are left free. This is called

• self-magnetization

• magnetization

• demagnetization

• self-demagnetization

_______ can be used to prevent self-demagnetization in case of horse-shoe magnets.

• Soft iron

• Cobalt

• Wood

• Steel

What is the process called when a magnet loses its magnetism over time?

• Magnetization

• Demagnetization

• Polarization

• Electrification

Which of the following materials can be used to prevent demagnetization in magnets?

• Copper

• Plastic

• Soft iron

• Glass

Tags

NGSS.MS-PS2-3

What is the effect of heating on a magnet?

• It strengthens the magnet

• It causes demagnetization

• It has no effect

• It polarizes the magnet

Which method can be used to demagnetize a magnet?

• Cooling it

• Heating it

• Stroking it with another magnet

• Wrapping it in cloth

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

What happens to a magnet if it is dropped repeatedly?

• It becomes stronger

• It becomes demagnetized

• It changes color

• It becomes polarized

How does alternating current (AC) affect a magnet?

• It magnetizes it

• It demagnetizes it

• It polarizes it

• It electrifies it

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the role of a keeper in maintaining a magnet's strength?

• It demagnetizes the magnet

• It prevents demagnetization

• It polarizes the magnet

• It electrifies the magnet