Question

How will you do this?
1.
(a) Determine whether a material is
magnetic or non-magnetic.

(b) Explain that a magnet has a certain magnetic field.

(c) Find the north pole of a magnet.​

Answer 1

Explanation:

1. Those materials which are not attracted by a magnet are called non- magnetic materials. All the substances other than iron, nickel, and Cobalt are non-magnetic substances for example plastic, rubber, water, etc are nonmagnetic materials. Non-magnetic substances cannot be magnetized.
2. It represents that the magnet exerts a force around its body with a stronger force near the two poles. Also, this regular pattern of the iron filings on the board represents the lines of magnetic field. Thus, a magnet has a certain magnetic field which can be represented by curved lines around a magnet.
3. Unless they came marked with “N” or “S,” the poles of a magnet look the same. One easy way to tell which pole is north and which is south is to set your magnet near a compass. The needle on the compass that normally points toward the north pole of the Earth will move toward the magnet's south pole.

Answer 2

a)- The easiest way to identify magnetic materials is to keep iron near to the given material. If the material attracts the iron object, then it is called magnetic.

b)- It represents that the magnet exerts a force around its body with a stronger force near the two poles. Also, this regular pattern of the iron filings on the board represents the lines of magnetic field. Thus, a magnet has a certain magnetic field which can be represented by curved lines around a magnet.

c)- Try taking a solenoid and mark north and south pole in it. Take the north pole of the solenoid and check which side of the bar magnet is attraction and repulsion seen. Repulsion means both are north poles. Attraction indicates unlike poles.

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