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

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

Question # 2

Amperean path is a:

Question # 3

Electron gun consist of

Question # 4

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 5

Which one of the following relations is correct?

Question # 6

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

Question # 7

Avo-meter is used of measure the

Question # 8

The field around a moving charge is called

Question # 9

How many number of anodes used in electron gun

Question # 10

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

Question # 11

For the conversion of galvanometer into voltmeter, we connect a

Question # 12

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

Question # 13

The vector representation of force experience give the direction of

Question # 14

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

Question # 15

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

Question # 16

Weber is a unit of

Question # 17

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

Question # 18

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 # 19

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 # 20

The unit of magnetic flux is

Question # 21

Centripetal force for electron is given by

Question # 22

A beam of electrons is provided by an

Question # 23

Flurescent screen is a screen where visible spot

Question # 24

A long wire wound tightly on a cylindrical core is called:

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

Lorentz force is defined as

Question # 29

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

Question # 30

F = I(L x B) is a

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ECAT Class Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
2 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
3 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
4 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
5 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
6 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
7 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
8 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
9 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
10 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance

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