Magnetic Effects of Current and Magnetism Test

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Magnetic Effects of Current and Magnetism Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

A dip needle free to move in a vertical plane perpendicular to the magnetic meridian will remain

A
vertical

B
horizontal

C
at an angle of 60° to the vertical

D
at an angle of 45° to the horizontal
Question 2
1 / -0

When a ferromagnetic substance is heated to a temperature above its Curie temperature, it

A
behaves like a paramagnetic substance

B
behaves like a diamagnetic substance

C
remains ferromagnetic

D
is permanently magnetised
Question 3
1 / -0

A needle made of bismuth is suspended freely in a magnetic field. The angle which the needle makes with the magnetic field is

A
0°

B
45°

C
90°

D
180°
Question 4
1 / -0

A frog can be levitated in magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as a/an _______ substance.

A
paramagnetic

B
diamagnetic

C
ferromagnetic

D
anti-ferromagnetic
Question 5
1 / -0

The relative permeability of a substance A is slightly greater than unity, while that of a substance B is slightly less than unity. Which of the following statements is correct?

A
A is ferromagnetic and B is paramagnetic.

B
A is diamagnetic and B is paramagnetic.

C
A is paramagnetic and B is diamagnetic.

D
A and B are both ferromagnetic.
Question 6
1 / -0

A sensitive magnetic instrument can be shielded very effectively from outside fields by placing it inside a box of

A
teak wood

B
plastic material

C
a metal of low magnetic permeability

D
a metal of high magnetic permeability
Question 7
1 / -0

At a certain place, the horizontal component of earth's magnetic field is √3 times the vertical component. The angle of dip at that place is

A
30^o

B
45^o

C
60^o

D
90^o
Question 8
1 / -0

When iron filings are sprinkled on a sheet of glass placed over a short bar magnet then,

A
The iron filings form a pattern of suggesting that the magnet has south pole similar to the negative charge

B
The iron filings form a random pattern of suggesting that the magnet has random pole

C
The iron filings form a pattern suggesting that the magnet has two poles similar to the positive and negative charge of an electric dipole

D
The iron filings form a pattern of suggesting that the magnet has north pole similar to the positive charge

Solution

North pole act as positive end and South pole act as negative end. The iron fillings in the presence of magnetic field gets magnetized and form a tiny magnet which then gets attracted to the poles of bar magnet. North pole of bar magnet attracts south pole of tiny magnet and vice-versa. So all the iron fillings are arranged as the magnetic field lines of bar magnet.

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Re-Attempt Weekly Quiz Competition

Magnetic Effects of Current and Magnetism Test - 2

Result

Magnetic Effects of Current and Magnetism Test - 2

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Rank

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SHARING IS CARING

Question 1

vertical

horizontal

at an angle of 60° to the vertical

at an angle of 45° to the horizontal

Question 2

behaves like a paramagnetic substance

behaves like a diamagnetic substance

remains ferromagnetic

is permanently magnetised

Question 3

0°

45°

90°

180°

Question 4

paramagnetic

diamagnetic

ferromagnetic

anti-ferromagnetic

Question 5

A is ferromagnetic and B is paramagnetic.

A is diamagnetic and B is paramagnetic.

A is paramagnetic and B is diamagnetic.

A and B are both ferromagnetic.

Question 6

teak wood

plastic material

a metal of low magnetic permeability

a metal of high magnetic permeability

Question 7

30o

45o

60o

90o

Question 8

The iron filings form a pattern of suggesting that the magnet has south pole similar to the negative charge

The iron filings form a random pattern of suggesting that the magnet has random pole

The iron filings form a pattern suggesting that the magnet has two poles similar to the positive and negative charge of an electric dipole

The iron filings form a pattern of suggesting that the magnet has north pole similar to the positive charge

Solution

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30^o

45^o

60^o

90^o