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Magnetic Force

Fill in the b...

Question

Fill in the blanks.

(a) There is magnetic ………… between like poles.

(b) Stainless steel is a ………… substance.

(c) There is mutual attraction between ………… poles of magnets.

(d) There is maximum magnetic force near the ………… of a magnet.

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Solution

(a) There is magnetic repulsion between like poles.

(b) Stainless steel is a magnetic substance.

(c) There is mutual attraction between unlike poles of magnets.

(d) There is maximum magnetic force near the poles of a magnet.

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Q. poles, attracts, east-west, north-south like, opposite, repel, magnetic
Fill in the blanks in the following passage(s) from the words given above.

A magnet ........1......... small pieces of iron, nickel, cobalt. etc. The magnetic force of attraction is maximum in small regions near the ends of the magnet. These are called the ........2........of the magnet.
A freely suspended magnet always points in ......3...... direction. The end pointing towards north is called north seeking pole or north pole. The other end which points towards south is called south seeking pole or south pole. All magnets attract ...........4.......... poles of other magnets and also a few substances like iron, nickel and cobalt. Thus if an unknown substance is attracted by a magnet, we cannot be sure whether it is a magnet. But like poles of magnet ....,....5............ each other. Hence if there is repulsion between an unknown substance and a magnet, we can be sure that the unknown substance is a magnet. The substances which are attracted by magnets are called ......6...... substances.

Q. A teacher asked the class to state four facts about magnets. This is what four students had to say.
Rohit: The poles of a magnet have the minimum magnetic strength.
Shyama: Metals like iron and stainless steel are attracted by a magnet.
Rachna: A pole of a magnet attracts the opposite pole but repels the similar pole.
Garima: Only a bar magnet has poles.
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(a) Rohit
(b) Shyama
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(d) Garima

Whenever there is a force on magnetic pole, there exists:-

Q. Differentiate between steel and stainless steel. Is either of them magnetic?

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