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

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 # 2

The angle of deflection of coil can be measured by the

Question # 3

The SI unit of flux density is

Question # 4

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

Question # 5

In the region surrounding a current carrying wire:

Question # 6

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

Question # 7

The unit of flux density is also given by

Question # 8

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 9

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 10

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

Question # 11

To convert galvanometer into ammeter we connect

Question # 12

The field around a moving charge is called

Question # 13

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 14

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 15

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

Question # 16

The current sensitivity of the galvanometer is

Question # 17

The CRO is used for displaying the waveform of a given

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

The sources of magnetic field are

Question # 22

Flurescent screen is a screen where visible spot

Question # 23

F = I(L x B) is a

Question # 24

The gavanometer constant of a moving coil galvanometer is given by

Question # 25

The magnetic field in the middle of a solenoid due to current is

Question # 26

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

Question # 27

The magnetic field inside a solenoid can be increased by:

Question # 28

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 29

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
2 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
3 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
4 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
5 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
6 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
7 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
8 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
9 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
10 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid

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