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Four Fundamental Forces

A magnet attr...

Question

A magnet attracts an iron piece by an___ pole on its 'near' end.

A

Inducing

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B

opposite

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Solution

Explanation:
The magnetic pole induces opposite polarity at the near end of the iron rod and similar polarity at the far end.
So if you place a piece of iron on one end of a magnet, the end of the piece nearer to the magnet will cause the opposite polarity through a magnetic induction process.
Hence, A magnet attracts an iron piece by Inducing an opposite pole on its 'near' end.

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Similar questions

Explain the following :

(a) When two pins are hung by their heads from the same pole of a magnet, their pointed ends move apart.

(b) Several soft iron pins can cling, one below the other, from the pole of a magnet.

(c) The north end of a freely suspended magnetic needle gets attracted towards a piece of soft iron placed a little distance away from the needle.

Q. Which of the following statements are correct? Rewrite the incorrect ones correctly.
(a) A magnet will be attracted to the aluminium frame of a window.
(b) A magnet will not lose its magnetism even if it is repeatedly dropped on the floor.
(c) When a magnet is dipped into a box of paper clips, most of them will be seen sticking to the ends of the magnet.
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(e) Magnetic poles that are alike attract each other.
(f) If a magnet is floated on a cork in water and balanced, one end will point east and the other end will point west.
(g) Both the ends of a solid bar are attracted to both poles of a magnet. The bar could be a magnet.
(h) Unlike magnetic poles attract each other.
(i) Iron can be used to make permanent magnets.
(j) Compasses work best when they are placed near iron objects.

Q. Fill in the blanks with the appropriate word.
(a) If a bar magnet is hung by a thread tied at its centre, its north pole becomes steady in the direction of the ................ Pole of the earth.
(South, north, east, west)
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(6,3,2)
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(opposite, like.)
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(permanent magnetism, induced magnetism)
(e) If a magnet attracts a piece of metal, that piece must be made of ............. .
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Q. The south pole of a magnet is brought near an end A of another magnet. The two repel each other. Which pole is end A?

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