ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

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

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

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ECAT Pre General Science Physics Chapter 14 Electromagnetism

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Question # 1

The strength of magnetic field around the current conductor is

Question # 2

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

Question # 3

The direction of lines of force depends upon the direction of

Question # 4

NmA-1 is commonly called:

Question # 5

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 6

The magnetic field inside a solenoid can be increased by:

Question # 7

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 8

A charged particle moving at right angle to the magnetic field will experience

Question # 9

The vector representation of force experience give the direction of

Question # 10

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 11

Tesla is the unit of

Question # 12

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

Question # 13

The voltage increases linearly with

Question # 14

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 15

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 16

A beam of electrons is provided by an

Question # 17

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 18

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

Question # 19

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 20

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 21

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 22

A galvanometer is an instrument used to

Question # 23

Current is measured in

Question # 24

A solenoid is a coil of wire which is:

Question # 25

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

Question # 26

Which one of the following relations is correct?

Question # 27

The force acting on a charge moving in a magnetic field

Question # 28

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 29

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 30

The SI unit of magnetic permeability is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
2 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
3 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
4 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
5 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
6 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
7 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these
8 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
9 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
10 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

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