Fun with Magnets Test

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Fun with Magnets Test - 10

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Weekly Quiz Competition

Question 1
1 / -0

Identify the methods by which a magnet can lose their properties.

A
Heating a magnet strongly

B
Repeated hammering of the magnet

C
Manet is dropped from some height

D
All of the above

Solution

The methods by which a magnet can lose its properties are:
$$(1)$$ Heating a magnet strongly
$$(2)$$ Hammering the magnet several times or repeated hammering
$$(3)$$ By dropping the magnet from some height
Question 2
1 / -0

If a bar magnet is cut into pieces its two edges will have ______ and __________ pole.

A
North, North

B
North, South

C
South, South

D
South, North

Solution

A bar magnet is a rectangular object that has a magnetic field. Each end of a bar magnet is called a pole — one is north and the other south. When freely suspended, the magnet will align itself so that the end of its northern pole points towards the Earth's magnetic North Pole.

If a bar magnet is cut into pieces its two edges will have South and North pole as magnetic monopoles do no exist.
Question 3
1 / -0

An instrument which uses magnet to give direction is known as :

A
compass

B
motor

C
vacuum cleaner

D
Magna lock

Solution

A compass is the instrument which uses magnet to give the direction.
Question 4
1 / -0

Magnet was found in a place called :

A
Asia

B
Magnesia

C
Europe

D
Denmark

Solution

Magnet was found in a place called Magnesia.
Question 5
1 / -0

___ pole of a normal magnet is directing in ___side of the earth. Fill in the blank.

A
North, North

B
North, South

C
South, North

D
South, South

Solution

North pole of a normal magnet is directing in north side of the earth. This phenomenon is used to know the direction using compass.
Question 6
1 / -0

Which of the following is not a type of magnet ?

A
Ring magnet

B
Horse shoe magnet

C
Bar magnet

D
Super magnet

Solution

Super magnet is not a type of magnet
The term super magnet is a broad term and encompasses several families of rare-earth magnets that include seventeen elements in the periodic table; namely scandium, yttrium, and the fifteen lanthanides. First developed in the 1970’s and 80’s, super magnets are the strongest type of permanent magnets ever made, are ferromagnetic, meaning that like iron they can be magnetized, and have Curie temperatures that are below room temperature. This means that in their pure form, their magnetism only appears at low temperatures. However, since they can form compounds with transition metals such as iron, nickel, and cobalt, metals that have Curie temperatures well above room temperature, they can be used effectively at higher temperatures as well. The main advantage they have over conventional magnets is that their greater strength allows for smaller, lighter magnets to be used, ones that can do the same job but take up less space and require less material.
Question 7
1 / -0

Magnets lose their properties significantly if

A
Left in the open

B
Touched with iron

C
Dropped from a height repeatedly

D
None of these

Solution
Question 8
1 / -0

Which of the following process are used to make a magnet?

A
Casting of magnetic material

B
Pressing and sintering of magnetic material

C
Extruding of magnetic material

D
All of the above

Solution

The casting of a magnetic material, pressing and sintering of magnetic material, and extruding of magnetic material are the processes used for making permanent magnets.
Question 9
1 / -0

Lisa did an experiment to find out which part of the magnet attracts the most pins. Which of the following readings is correct regarding the number of pins attracted by the different parts of the magnet?

A
P- 8; Q- 1; R- 2; S- 8

B
P- 8; Q- 3; R- 3; S- 2

C
P- 3; Q- 2; R- 3; S- 8

D
P- 1; Q- 8; R- 8; S- 1

Solution

P and S are the poles of the magnet and the magnetic forces is strongest at these ends. So, they will attract the maximum number of pins.
Question 10
1 / -0

Which of the following is/are correct regarding location of a bar magnet?

A
The north pole (N) and south pole (S) are located at the end of the bar magnet

B
Normally north pole is located at the left end of the bar magnet

C
Normally north pole is located at the right end of the bar magnet

D
None of the above

Solution

Magnets have both magnetic poles- north pole and south pole. The north pole and south pole are located at the end of the bar magnet.

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Re-Attempt Weekly Quiz Competition

Fun with Magnets Test - 10

Result

Fun with Magnets Test - 10

Score

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Rank

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SHARING IS CARING

Question 1

Heating a magnet strongly

Repeated hammering of the magnet

Manet is dropped from some height

All of the above

Solution

Question 2

North, North

North, South

South, South

South, North

Solution

Question 3

compass

motor

vacuum cleaner

Magna lock

Solution

Question 4

Asia

Magnesia

Europe

Denmark

Solution

Question 5

North, North

North, South

South, North

South, South

Solution

Question 6

Ring magnet

Horse shoe magnet

Bar magnet

Super magnet

Solution

Question 7

Left in the open

Touched with iron

Dropped from a height repeatedly

None of these

Solution

Question 8

Casting of magnetic material

Pressing and sintering of magnetic material

Extruding of magnetic material

All of the above

Solution

Question 9

P- 8; Q- 1; R- 2; S- 8

P- 8; Q- 3; R- 3; S- 2

P- 3; Q- 2; R- 3; S- 8

P- 1; Q- 8; R- 8; S- 1

Solution

Question 10

The north pole (N) and south pole (S) are located at the end of the bar magnet

Normally north pole is located at the left end of the bar magnet

Normally north pole is located at the right end of the bar magnet

None of the above

Solution

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