Fun with Magnets Test

Result

Fun with Magnets Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

The presence of magnetic field at a point can be detected by

A
ammeter

B
galvanometer

C
a compass needle

D
strong magnet

Solution

A compass can be used to detect presence of magnetic field as it will deflect from its N-S direction to direction if magnetic field at that point.
Question 2
1 / -0

A permanent magnet

A
attracts all substances

B
attracts only ferromagnetic substances

C
attracts magnetic substances and repels all others

D
attracts some substances and repels others

Solution

A permanent magnet attracts all magnetic substances
Question 3
1 / -0

Which of the following helps detecting the presence of magnetic field at a point ?

A
a strong magnet

B
a solenoid

C
a compass needle

D
a current carrying wire

Solution

A compass consists of a magnetized needle which tends to align in presence of a magnetic field, thus causing a deflection in the needle.
Question 4
1 / -0

Which effect of force is caused by the magnetic force between a magnet and a magnetic substance?

A
Change of position.

B
Change of shape.

C
Change of physical state.

D
Change of chemical nature.

Solution

The magnet attracts (pulls) a magnetic substance. The magnetic substance under the attractive force has changed its position and moved closer to the magnet. So option A is the answer.
Question 5
1 / -0

A bar magnet consists of

A
two poles of different nature and different strength

B
equal poles in magnitude

C
equal and opposite magnetic poles

D
opposite poles

Solution

A bar magnet has two equal and opposite poles - one is north pole and the other one is the south pole.
Question 6
1 / -0

The N-pole of a compass points to the .............. pole of a permanent magnet

A
north

B
south-east

C
south

D
north-east

Solution

The N-pole of a compass points to the S pole of a permanent magnet. Since apposite pole always attracts.
Question 7
1 / -0

Which of the following will help demagnetizing a magnet ?

A
Hammering the magnet

B
Putting it in the water

C
Cooling it

D
Putting in contact with iron

Solution

Hammering a magnet caused the randomization of the aligned orientation of the magnetic domains. that is why it appears to be demagnetized.
Question 8
1 / -0

Which of the following is not true?

A
We can magnetize an iron ring

B
We cannot isolate a single pole

C
A permanent magnet does not retains its magnetism if they are hammered

D
A permanent magnet retains its magnetism even when heated on a flame

Solution

Magnets lose their properties if they are heated, hammered, or dropped from some height. So, it is not true that a permanent magnet retains its magnetism even when heated on a flame.
We can magnetize an iron ring using a magnet.
All magnets have two poles, north, and south.
Question 9
1 / -0

A marine compass is used to

A
compare magnetic moments

B
determine $$H$$

C
determine direction

D
determine dip at a place

Solution

A marine compass used to determine direction, that consists of parallel magnetic needles or bundles of needles permanently attached to a card marked to indicate direction and degrees of a circle.
Question 10
1 / -0

_______ is the surest test of magnetism.

A
Attraction

B
Repulsion

C
No change

D
None of the above

Solution

Repulsion is the surest test for magnetism. Only magnets possess repulsive as well as attractive characteristics, whereas any unmagnetized magnetic substance has only attractive characteristics.

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Re-Attempt Weekly Quiz Competition

Fun with Magnets Test - 2

Result

Fun with Magnets Test - 2

Score

-

Rank

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SHARING IS CARING

Question 1

ammeter

galvanometer

a compass needle

strong magnet

Solution

Question 2

attracts all substances

attracts only ferromagnetic substances

attracts magnetic substances and repels all others

attracts some substances and repels others

Solution

Question 3

a strong magnet

a solenoid

a compass needle

a current carrying wire

Solution

Question 4

Change of position.

Change of shape.

Change of physical state.

Change of chemical nature.

Solution

Question 5

two poles of different nature and different strength

equal poles in magnitude

equal and opposite magnetic poles

opposite poles

Solution

Question 6

north

south-east

south

north-east

Solution

Question 7

Hammering the magnet

Putting it in the water

Cooling it

Putting in contact with iron

Solution

Question 8

We can magnetize an iron ring

We cannot isolate a single pole

A permanent magnet does not retains its magnetism if they are hammered

A permanent magnet retains its magnetism even when heated on a flame

Solution

Question 9

compare magnetic moments

determine $$H$$

determine direction

determine dip at a place

Solution

Question 10

Attraction

Repulsion

No change

None of the above

Solution

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