Magnetism: MCQ Test (25 questions)

Question 1 of 25

Lenz's law is-

Aconservation of mass
Bconservation of momentum
Cenergy conservation
Dconservation of mass and energy

Question 2 of 25

Which of the following is diamagnetic?

AIron
BBismuth
CNickel
DCobalt

Question 3 of 25

What are the numerous microscopic structures of atoms within ferromagnetic materials called?

Asolenoid
BToroid
Cdomain
DNone of these

Question 4 of 25

The Earth is a huge magnet. In which direction does its magnetic field extend?

AEast to west
BWest to East
CNorth South
DSouth to North

Question 5 of 25

The angle between the magnetic meridian and the geographical meridian is called-

Amagnetic inclination
Bmagnetic moment
Cmagnetic compass
Dnone of these

Question 6 of 25

A freely suspended magnet always remains at-

Ain the north-east direction
Bin the north-west direction
Cin the north-south direction
Din the south-west direction

Question 7 of 25

The lines of force in a uniform magnetic field should be-

Aconvergent
Bdivergent
Cparallel to each other
Dintersection

Question 8 of 25

If a magnet has a third pole, then the third pole is called—

AAdditional pole
BRandom poles
CFaulty pole
Dresultant pole

Question 9 of 25

Temporary magnets are made from-

Aof steel
Bsoft iron
Ccopper
DSilver

Question 10 of 25

Which of the following metals is not attracted by a magnet?

AIron
BNickel
CCobalt
Daluminium

Question 11 of 25

Which way does the needle of a magnetic compass point?

Amagnetic north
Bmagnetic south
Cmagnetic north and magnetic south
DNone of these

Question 12 of 25

The magnetic effect of electric current was first observed in-

Aby Henry
Bby Ostend
Cby Faraday
DBy Volta

Question 13 of 25

Magnets are an essential part of which of the following household appliances?

Acalling bell
Bfan
Cwashing machine
DAll of the above

Question 14 of 25

Which of the following materials is most suitable for making the core of a transformer?

Asoft iron
Bstainless steel
CCopper
DNickel

Question 15 of 25

If a magnet is divided into two parts then-

ABoth parts become separate magnets.
BOne part becomes magnetized and the other part becomes non-magnetic.
COne part becomes the North Pole and the other part becomes the South Pole.
DBoth parts become non-magnetic

Question 16 of 25

The unit of magnetic field is-

AGauss
BWeber
CHenry
Ddomain

Question 17 of 25

Which of the following statements is false?

AThere is a magnetic field around a magnet
BOstand is credited with the discovery of electromagnetic field.
CIf the compass needle is kept near a magnet, it does not stop in the north-south direction but gets arranged in a particular direction.
DA magnetic field is not produced around an electric current.

Question 18 of 25

Which of the following is electromagnetically non-magnetic?

ANickel
BCobalt
CChromium
Dcopper

Question 19 of 25

Fleming's left hand rule gives the direction of

AElectric current in a conductor placed in an electric field.
Bmagnetic field in an electric conductor
CThe direction of force in an electric conductor when the conductor is in a magnetic field
Dnone of these

Question 20 of 25

A powerful magnet

Aattracts all substances
BAttracts only iron and its alloys
CAttracts only iron and its alloys, but does not repel any other metal.
Dattracts some substances, repels others

Question 21 of 25

The axis of a freely hanging magnetic needle makes an angle with the geographical axis-

Aof 20°
Bof 16°
Cof 18°
Dof 15°

Question 22 of 25

The value of the angle of dip at the equator is-

A0°
B90°
C180°
D45°

Question 23 of 25

The process by which a metal is made non-magnetic is called-

ADemagnetization
BDegaising
CDigeding
DDegreasing

Question 24 of 25

What is the value of angle of dip at the poles?

A0°
B45°
C60°
D90°

Question 25 of 25

Which of the following is a paramagnetic substance?

Ahydrogen
Bnitrogen
Coxygen
DIron