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 sources of magnetic field are

Question # 2

The torque per unit twist of coil is called

Question # 3

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 4

CRO deflects the beam of

Question # 5

Which one of the following relations is correct?

Question # 6

Ammeter is used to measure

Question # 7

The most suitable material for permanent magnet is

Question # 8

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 9

A field is uniform and much stronger:

Question # 10

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 11

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

Question # 12

The permeability of free space is measured in:

Question # 13

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 14

The direction of lines of force depends upon the direction of

Question # 15

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

Question # 16

F = I(L x B) is a

Question # 17

NmA-1 is commonly called:

Question # 18

Current is measured in

Question # 19

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 20

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

Question # 21

The voltage increases linearly with

Question # 22

Avo-meter is used of measure the

Question # 23

The current is measured in

Question # 24

The unit of flux density is also given by

Question # 25

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 26

The SI unit of magnetic permeability is

Question # 27

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 28

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 29

The SI unit of magnetic induction is

Question # 30

The SI unit of flux density is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
3 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
4 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
5 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
6 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
7 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
8 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
9 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
10 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these

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