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प्रश्न
Explain the mechanism of attraction of iron nails by a magnet when brought near them.
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उत्तर
When iron nails are brought near one end of a magnet, the nearer end of piece acquires an opposite polarity by magnetic induction. Since unlike poles attract each other, therefore, iron nails are attracted towards the end of the magnet. Thus, the iron nail first becomes a magnet by induction and then it is attracted.
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संबंधित प्रश्न
A strong bar magnet is placed vertically above a horizontal wooden board. The magnetic lines of force will be:
(a) only in horizontal plane around the magnet
(b) only in vertical plane around the magnet
(c) in horizontal as well as in vertical planes around the magnet
(d) in all the planes around the magnet
What is a lodestone?
What is a natural magnet? State two limitations of a natural magnet.
Select the correct option:
Nickel is a:
Distinguish between
Magnetic properties of iron and steel.
The magnetic field lines always begin from ____________.
If the key in the arrangement is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are
Can two magnetic lines of force intersect? Justify your answer:
Assertion (A): Magnetic field lines never intersect each other.
Reason (R): If they intersect, then at the point of intersection, the compass needle would point towards two directions, which is not possible.
