Question

1. How will you do this?
(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

Answer

• 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.
• 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.
• 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

Answer:

a )The simple testto identify magnetic materials is to keep iron near to the material. if the material has the tendency yo attract the iron object then it is cslked magnetic or else it is non magnetic.

b) Also this regular pattern of the iron fillings on the board represents the lines of magnetic field. onethus, a magnet has a certain magnetic field which can be represented by curved lines around a magnet.c) tie a thread to the centre of a magnet and hang it from a stand as shown.

c)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 point toward the north pole of the Earth will move toward the magnet's south pole.