Characteristics of a Magnet

Q.

A U- shaped magnet has _________ poles.

1. three

2. four

3. one

4. two

Q. There are no markings on a bar magnet to differentiate north pole and south pole. What is the best method to identify the poles of a bar magnet? [2 MARKS]

Q.

Explain how do you test if the given material is magnet or not?

Q. Explain the attractive property of a magnet with the help of an experiment.

Q.

Question 5

A bar magnet is immersed in a heap of iron filings and pulled out. The amount of iron filling clinging to the

(a) North pole is almost equal to the south pole.

(b) North pole is much more than the south pole.

(c) North pole is much less than the south pole.

(d) Magnet will be same all along its length.

Q. Is we can find the north pole and south pole of ring magnet?

Q.

In the diagram, the magnetic poles $XandY$ are …….. and ……., respectively.

1. South, South

2. North, South

3. South, North

4. North, North

Q.

If the north pole of a bar magnet is brought closer to a spherical iron ball then where will be its induced north pole?

1. 2

2. 3

3. There will be no induced magnetic poles as the shape is spherical.

4. 1

Q.

Which among these is not true for magnets

A) When a bar magnet is cut into half, each half will have only one pole
B) A magnet can be obtained from the iron in which all the electrons are spinning in the same direction
C) Iron, Nickel, and Cobalt are the three elements of a magnet
D) The earth acts as a huge magnet

Q.

Which of the following statement is TRUE?

1. A cylindrical magnet has only one pole.

2. Artificial magnets were discovered in Greece.

3. A compass can be used to find East-West direction at any place.

4. Similar poles of a magnet repel each other.

Q.

North pole of a magnet can be identified by

1. Another magnet having its poles marked as North pole and South pole.

2. Another magnet no matter whether the poles are marked or not.

3. Using an iron bar.

4. Using iron filings.

Q. Two bar magnets repel when brought closer to each other. Identify the north pole of the plain bar magnet.

1. 
2. 
3. 

Q.

Magnetic poles can exist either in pairs or in isolation.

1. True
2. False

Q.

If a bar magnet is cut into two pieces then each piece will _________.

1. have its own set of poles

2. lose its magntic property

3. have only one magnetic pole

4. have no pole

Q.

When the South pole a magnet is brought near the N pole of a freely suspended magnetic needle, they will ___ each other.

1. Attracts

2. Repels

3. It rotates

4. None of these

Q.

Statements given below are incorrect. Write the correct statements.

Natural magnets are more powerful than artificial magnets.

Q.

A magnet always has ___ poles.

Q.

A magnet has ________ as well as attractive property.

Q.

___ is the surest test for magnetism.(Repulsion/Attraction)

Q.

When at the south pole of the earth, the south pole of a magnet is brought near the north pole of a freely suspended magnetic needle, it will_____.

1. Attracts

2. Repels

3. It rotates

4. None of these

Q. Three identical bars X, Y and Z are brought near a compass. X and Y deflect the needle of the compass while Z does not. Choose the correct statements regarding the above observation.

1. X and Y may attract each other.
2. Z may be a horseshoe magnet.
3. X and Z must repel each other.
4. Both X and Y are magnets, and they have only north poles.

Q. A bar magnet has no markings to indicate its poles. How would you find out near which end is its north pole located? ​[3 marks]

Q.

A magnet attracts:

1. Anything close to it

2. Charged substances

3. Magnetic substances

4. Flies

Q.

Statements given below are incorrect. Write the correct statements.

Attraction is the surest test of magnetism.

Q.

How can you say that the needle of a compass is made up of a magnet? It's because the compass:

1. 1 and 2

2. 1, 2 and 4

3. 2 and 4

4. 2 only

Q.

______ (Attraction/Repulsion) is a sure test of magnetism.

Q.

Why is repulsion a surer test of magnetism than attraction?

Q. Where are the poles of a bar magnet located?​

1. Both poles are at one end of the magnet​
2. Uniformly distributed all over the magnet​
3. At the middle of the magnet​
4. At both ends of the magnet​

Q.

Give a reason for the following.

Repulsion is the sure test for magnetism.

Q. Will a strong magnet attract a piece of copper? Why?