ECAT Pre General Science Chapter 14 online mcq test with answers for Physics chapter 14 (Electromagnetism)

Question # 1

The force experienced by charged particle is maximum, if it moves

parallel to magnetic field A
perpendicular to magnetic field B
opposite to the magnetic field C
none of these D

Question # 2

In the region surrounding a current carrying wire:

A magnetic field is setup
A
The lines of force are elliptical
B
Direction of lines of forces depends upon direction of current
C
Both (A) and (C)
D
All of these E

Question # 3

Method "lamp and scale arrangement" used to measure the

angle of deflection A
restoring torque B
magnetic field strength C
current D

Question # 4

Strength of magnetic field is measured in SI units, in:

N A
N/Am B
Am/N C
Nm/A D
None of these E

Question # 5

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

IT = 10^-4G A
IT = 10⁵G B
IT = 10³G C
IT = 10⁴G D

Question # 6

The permeability of free space is measured in:

Wb/Am A
Wb A/m B
Am/Wb C
m/Web A D
None of these E

Question # 7

The strength of magnetic field around the current conductor is

Smaller near the conductor A
Greater near the conductor B
Greater at the large distance from the conductor C
Constant near and away from the conductor D

Question # 8

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

parallel to the field A
Perpendicular to the field B
At an angle of 45 to the field C
None of the above D

Question # 9

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Thumb
A
Curled fingers
B
Middle finger
C
Arm of right hand
D
None of these
E

Question # 10

The gavanometer constant of a moving coil galvanometer is given by

K=BAN/C A
K=BN/CA B
K=NAC/B C
K=C/BAN D

Question # 11

Weber is a unit of

magnetic flux A
magnetic filed intensity B
magnetic induction C
magnetic flux density D

Question # 12

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

circular A
elliptical B
cycloid C
straight line D

Question # 13

The magnetic field outside the solenoid due to current is

strong A
zero B
weak C
uniform D

Question # 14

In the formula B= µ̻ nl, the symbol n denotes:

Total number of turns of solenoid
A
Number of turns per unit length
B
Number of turns per unit volume
C
Numbers of turns per unit area
D
Number of moles
E

Question # 15

When current passes through a solenoid coil, it behaves like a

loop A
circle B
bar magnet C
none of these D

Question # 16

The pointer of a magnetic compass:

Is affected only by permanent magnets
A
Align itself parallel to the applied magnetic field
B
Vibrates in the magnetic field of the current
C
Aligns itself perpendicular to the magnetic field
D
Both (C) and (D) E

Question # 17

The unit of magnetic flux is

Weber-m² A
Weber-m³ B
Henry C
Weber D

Question # 18

The field around a moving charge is called

magnetic field A
conservative field B
non-conservative field C
none of these D

Question # 19

In a moving coil galvanometer, the deflecting couple depends upon

area of the coil A
number of turns of coil B
value of magnetic field C
all of the above D

Question # 20

NmA^-1is commonly called:

Weber A
Apmere B
Guass C
Coulomb D
None of these E

Question # 21

It is customary represent a current flowing towards the reader by a symbol

(x) A
(+) B
(.) C
(-) D
(÷)
E

Question # 22

The vector representation of force experience give the direction of

magnetic field A
current B
length of conductor C
force D

Question # 23

Which one of the following relations is correct?

1 Wb-m²= Nm^-1A^-1 A
1 tesla = 104 gausses B
1 Wb-m²= 1 tesla C
All of the above D

Question # 24

A magnetic force on an electron travelling with 10⁸ms^-1parallel to a field of strength 1 Wb m^-2is

Zero A
10⁵m B
10^-10N C
10⁸N D

Question # 25

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

+e(v x B) A
-C(V x B) B
+e²(v x B) C
-e(v²x B) D

Question # 26

CRO deflects the beam of

proton A
a-particle B
electron C
neutron D

Question # 27

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

minimum A
maximum B
zero C
none of these D

Question # 28

How many number of anodes used in electron gun

one A
two B
three C
six D

Question # 29

The CRO deflects the beam of electrons, when they passes through uniform

electric field A
gravitational field B
magnetic flax C
magnetic field D

Question # 30

The SI unit of magnetic flux is.

weber A
Nm^-1A^-1 B
tesla C
gauss D

Sr.#	Question	Answer
1	In the region surrounding a current carrying wire:	A. A magnetic field is setup B. The lines of force are elliptical C. Direction of lines of forces depends upon direction of current D. Both (A) and (C)
2	The gavanometer constant of a moving coil galvanometer is given by	A. K=BAN/C B. K=BN/CA C. K=NAC/B D. K=C/BAN
3	Centripetal force for electron is given by	A. mv²/ r B. mv / r² C. mv²/ r D. mr²/ v
4	How many number of anodes used in electron gun	A. one B. two C. three D. six
5	It is customary represent a current flowing towards the reader by a symbol	A. (x) B. (+) C. (.) D. (-)
6	Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:	A. BACosѲ B. Zero C. BA D. BA sinѲ
7	Amperean path is a:	A. Closed path B. Rectangular path C. Circular path D. Any of above
8	The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by	A. F=IB/L B. F= L x B/I C. F = IL x B D. F = IL . B
9	The sources of magnetic field are	A. isolated magnetic poles B. charges at rest C. charges in motion D. none of these
10	The CRO is used for displaying the waveform of a given	A. current B. voltage C. both of them D. none of them

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ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

ECAT Pre General Science Physics Chapter 14 Electromagnetism

The force experienced by charged particle is maximum, if it moves

In the region surrounding a current carrying wire:

Method "lamp and scale arrangement" used to measure the

Strength of magnetic field is measured in SI units, in:

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

The permeability of free space is measured in:

The strength of magnetic field around the current conductor is

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

The gavanometer constant of a moving coil galvanometer is given by

Weber is a unit of

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

The magnetic field outside the solenoid due to current is

In the formula B= µ̻ nl, the symbol n denotes:

When current passes through a solenoid coil, it behaves like a

The pointer of a magnetic compass:

The unit of magnetic flux is

The field around a moving charge is called

In a moving coil galvanometer, the deflecting couple depends upon

NmA-1 is commonly called:

It is customary represent a current flowing towards the reader by a symbol

The vector representation of force experience give the direction of

Which one of the following relations is correct?

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

CRO deflects the beam of

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

How many number of anodes used in electron gun

The CRO deflects the beam of electrons, when they passes through uniform

The SI unit of magnetic flux is.

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NmA^-1is commonly called:

A magnetic force on an electron travelling with 10⁸ms^-1parallel to a field of strength 1 Wb m^-2is