General Science/Basic Science Magnetic Field Sample Test,Sample questions

Question:
22.The direction of magnetic field is the direction along which

1.a tiny bar magnet moves

2.an isolated south pole moves

3.an isolated north pole moves

4.a unit positive charge moves

Posted Date:-2021-10-17 11:38:41


Question:
A freely suspended magnet will always come to rest in the direction

1.East-North

2.North-West

3.North-South

4.South-West

Posted Date:-2021-10-17 11:38:41


Question:
A line of force in a magnetic field

1.is a line joining the poles

2.is a path along which an isolated charge moves

3.is a path along which a short bar magnet moves

4.is a path along which an isolated north pole moves

Posted Date:-2021-10-17 11:38:41


Question:
A uniform magnetic field

1.is produced by a bar magnet

2.is produced by an isolated north pole

3.has parallel flux lines

4.produces no force on a north pole

Posted Date:-2021-10-17 11:38:41


Question:
Ampere-meter is the unit of

1.magnetic moment

2.pole strength

3.electric potential

4.magnetic potential

Posted Date:-2021-10-17 11:38:41


Question:
Force between two identical magnets is proportional to

1.m/d

2.m2/d

3.m/d2

4.m2/d2

Posted Date:-2021-10-17 11:38:41


Question:
Force of the attraction between two poles placed in vacuum

1.decreases as the pole strength increases

2.increases with decrease in distance

3.decreases with decrease in distance

4.increases with decrease in pole strength

Posted Date:-2021-10-17 11:38:41


Question:
� indicates the property of

1.a dielectric

2.a conductor

3.a magnetic material

4.an insulator

Posted Date:-2021-10-17 11:38:41


Question:
� is the symbol for

1.permittivity

2.permeability

3.conductivity

4.resistivity

Posted Date:-2021-10-17 11:38:41


Question:
One tesla is equivalent to

1.weber

2.weber/metre2

3.amp-metre

4.amp/metre

Posted Date:-2021-10-17 11:38:41


Question:
The dimension of �r is

1.ML0 T -1

2.LT -1

3.HM -1

4.nil

Posted Date:-2021-10-17 11:38:41


Question:
The distance between the poles of a magnet is called

1.magnetic axis

2.magnetic moments

3.length of the magnet

4.magnetic length

Posted Date:-2021-10-17 11:38:41


Question:
The flux density is

1.a scalar quantity

2.is a vector quantity

3.the magnetic moment per unit volume

4.the dipoles per unit volume

Posted Date:-2021-10-17 11:38:41


Question:
The force experienced by a magnet of pole strength m in a uniform magnetic field of strength H is

1.mH

2.m/H

3.H/m

4.mWb

Posted Date:-2021-10-17 11:38:41


Question:
The intensity of magnetic field is the force acting on

1.a short bar magnet

2.a long bar magnet

3.a unit north pole

4.a unit south pole

Posted Date:-2021-10-17 11:38:41


Question:
The magnetic axis of a magnet is

1.perpendicular to the length of the magnet

2.along the line joining the poles

3.the direction of zero magnetic flux

4.a line of zero moment

Posted Date:-2021-10-17 11:38:41


Question:
The magnetic flux

1.is a scalar quantity

2.is a vector quantity

3.denotes the amount of the force on a north pole

4.is the magnetic moment of a bar magnet

Posted Date:-2021-10-17 11:38:41


Question:
The north pole of the earths magnetic field

1.is at the centre of the earth

2.lies along the equatorial line

3.lies in the northern hemisphere

4.lies in the southern hemisphere

Posted Date:-2021-10-17 11:38:41


Question:
The permeability of free space is

1.1 H/m

2.0

3.4? ? 10-7 H/m

4.4? ? 107 H/m

Posted Date:-2021-10-17 11:38:41


Question:
The ratio of the flux density to the magnetic field strength in a medium is its

1.intensity of magnetization

2.susceptibility

3.relative permeability

4.permeability

Posted Date:-2021-10-17 11:38:41


Question:
The relationship between magnetic flux and magnetic induction B is

1.? = B/A

2.B = A/?

3.B = ? A

4.B = ?/A

Posted Date:-2021-10-17 11:38:41


Question:
The relationship between relative permeability of a medium and permeability of free space is

1.�r = �r ? �0

2.� = �0 �r

3.�r = �0 / �

4.� = �0 / �r

Posted Date:-2021-10-17 11:38:41


Question:
The relationship between the magnetic induction B and the intensity of magnetic field H is

1.�0 = H/B

2.B = �0 H

3.H = �0 B

4.�0 = HB

Posted Date:-2021-10-17 11:38:41


Question:
The south pole of the earths magnetic field

1.is at the centre of the earth

2.lies along the equatorial line

3.lies in the northern hemisphere

4.lies in the southern hemisphere

Posted Date:-2021-10-17 11:38:41


Question:
The total number of lines of induction crossing any area is known as

1.magnetic induction

2.magnetic flux

3.magnetic field

4.mutual induction

Posted Date:-2021-10-17 11:38:41


Question:
The unit of intensity of magnetic field is

1.weber/metre2

2.weber/metre

3.ampere-metre2

4.ampere /metre

Posted Date:-2021-10-17 11:38:41


Question:
The unit of magnetic flux is

1.weber

2.tesla

3.weber-metre

4.ampere-metre

Posted Date:-2021-10-17 11:38:41


Question:
The unit of permeability is

1.H

2.Hm

3.H/m

4.Wb

Posted Date:-2021-10-17 11:38:41


Question:
The unit of pole strength is

1.Am

2.A/m

3.Wbm

4.Wb/m

Posted Date:-2021-10-17 11:38:41


Question:
The value of the relative permeability of air is

1.4? ? 10-7

2.0

3.-1

4.1

Posted Date:-2021-10-17 11:38:41


Question:
ttractive force exists between

1.two south poles

2.two north poles

3.poles of the same magnet

4.one north pole and one south pole

Posted Date:-2021-10-17 11:38:41


Question:
When a magnet is dipped in iron filings the fillings

1.cling throughout the magnet

2.cling to the magnet at the ends only

3.cling to the magnet at its center only

4.do not cling to the magnet

Posted Date:-2021-10-17 11:38:41


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