Скачать или смотреть Magnetism - CBSE NCERT Class VI Science lesson

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"About this Video"

Magnetism CBSE NCERT Science lesson by Soma Mukhopadhyay for SuccessCDs Videos

WHAT IS A MAGNET?
A PIECE OF IRON OR STEEL WHICH ATTRACTS OBJECTS MADE OF IRON TOWARDS ITSELF

MAGNETIC SUBSTANCES
NICKLE / COBALT / IRON AND STEEL
PIECES

NON-MAGNETIC SUBSTANCES
CLOTHES
PLASTIC
PAPER



NATURAL MAGNETS-

MAGNETS MADE FROM LOADSTONE

ARTIFICIAL MAGNETS-
MAGNETIC MATERIALS CAN ALSO BE CONVERTED INTO MAGNETS

TEMPORARY MAGNETS-
THEY ATTRACT MAGNETIC MATERIALS ONLY FOR SOMETIME

PERMANENT MAGNETS-
ALWAYS REMAINS A MAGNET

MAGNETS CAN BE OF MANY SHAPES
Horse shoe magnet
Cylindrical magnet
Bar magnet
Disc magnet


HOW TO MAKE A MAGNET ?

MAGNETISM
THE ABILITY OF MAGNETS TO PULL OR PUSH MAGNETIC PARTICLES IS CALLED MAGNETISM
MAGNETIC FIELD-THE AREA AROUND A MAGNET IN WHICH THE EFFECT OF MAGNET CAN BE EXPERIENCED

PROPERTIES OF A MAGNET

1.MAGNETS EXERT THEIR INFLUENCE THROUGH VARIOUS MATERIALS
2.MAGNETS EXERT MORE MAGNETIC FORCE AT THE ENDS COMPARED TO THE MIDDLE
3.A MAGNET COMES TO REST IN NORTH SOUTH DIRECTION

COMPASS
4.LIKE POLES REPEL,UNLIKE POLES ATTRACT

5.MAGNETIC POLES ALWAYS EXIST IN PAIRS

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